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Unit 9 Ecology- Part IV Human Impact

Total questions: 137

Worksheet time: 2hrs 15mins

Name
Class
Date
1.
Salt water is an abundant resource but unusable for irrigation and drinking. As demands on freshwater sources increase, the use of desalination processes to remove salt from ocean water is increasing. A concern of desalinating water is the large amounts of recovered salts that are returned to the ocean. Which of the following describes the most likely impact of desalination on the surrounding ocean environment? 
a)
Methane gas would pollute the ocean environment as shoreline organisms begin to die and decay.
b)
Alteration in ocean salt levels would cause loss of species and unbalanced populations in marine food webs.
c)
Nonrenewable resources in the ocean environment would become depleted and upset the ecosystem's balance.
d)
Increased levels of salts and minerals in the ocean would result in overpopulation of marine bivalves due to strengthened shells
2.
New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to
a)
 reduce the use of nonrenewable resources.
b)
increase the rate of air pollution.
c)
reduce the rate of homeostasis in organisms.
d)
 cause a loss of biodiversity in the rain forests.
3.
The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that
a)
. ecosystems are interconnected and human action can alter ecosystem equilibrium.
b)
recycling programs have failed to conserve biotic resources.
c)
natural processes can alter ecosystem stability.
d)
 direct harvesting practices have led to irreversible destruction of ecosystems.
4.
DDT and other pesticides used over 50 years ago are still affecting the environment today. Scientists have found these substances in recent glacier runoff. Glacier runoff occurs during the summer, when precipitation that has fallen on glaciers during the winter is released. Ice layers from existing glaciers have been analyzed. The results of this analysis show that the concentrations of DDT and other pesticides were highest about 10 years after the use of these substances was banned. This information shows that
a)
DDT and other pesticides cause glacier runoff during the summer.
b)
it takes humans over 50 years to analyze a glacier.
c)
precipitation helps to break down pesticides.
d)
the decision of one human generation may have an impact on future generations.
5.
The northern elephant seal was almost hunted to extinction in the 1800s. By the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. What will be the consequence of this reduction?
a)
 Competition within the population will increase.
b)
The surviving elephant seals will be better able to adapt.
c)
 Inbreeding will be less frequent among the remaining population.
d)
The elephant seals will be more vulnerable to environmental change. 
6.
A community is concerned about the water quality of a nearby lake. Increased sedimentation in the lake is endangering the native habitat. The increased sedimentation is most likely caused by which of the following?
a)
trees planted along the shore of the lake
b)
construction of homes along the lake
c)
the amount of sunlight on the lake
d)
the amount of fish in the lake
7.
When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?
a)
Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.
b)
The water becomes better able to support aerobic organisms.
c)
The algae provide food for fishes and other organisms, leading to decreased algae populations.
d)
The extra nitrogen provides additional food for the other organisms, increasing their population.
8.
A strip mining company wants to lease some land that is currently part of a national park. They promise to reclaim the land should any minerals be mined from the area, and they are willing to pay top dollar for the rights. As an ecologist, what factors would you raise with the local government?
a)
the threat to local biodiversity
b)
management of the land after the company leaves
c)
the new jobs that would be created
d)
the increased traffic in the area
9.
Whaling was a very profitable profession until whale populations crashed. The global community came together to enact a ban on whaling. However, Japan and Norway have not agreed to stop whaling. Which of the following is the most likely consequence of their decision?
a)
The whale populations are bouncing back very successfully and are unaffected by Japan and Norway continuing to whale.
b)
The whale populations are not rebounding as quickly as they might if all of the countries agreed not to hunt whales. 
c)
The whale populations have mutated into new kinds of organisms.
d)
The whales are getting better at avoiding capture. 
10.
The diagram shows the carbon cycle.  If many trees are removed from a forest by logging, what is the most immediate effect on the carbon cycle in that forest?
a)
 increase in the rates of decomposition
b)
increase in the rates of atmospheric carbon dioxide
c)
decreased combustion of fossil fuel
d)
 increase production of organic compounds
11.
How do invasive plants damage the environment?
a)
Compete with native species
b)
Change plant community
c)
Alter diversity
d)
All of these
12.

The primary cause of invasive species introduction is

a)

too much food

b)

human actions

c)

weather events

d)

asteroids

13.

Which of these is one cause of deforestation?

a)

Urbanization

b)

Buying a Christmas tree during the holidays

c)

Overbreeding birds in the wild

d)

Cutting down the tree in your backyard

14.
What is deforestation?
a)
Clearing Earth's forests on a massive scale
b)
Eating too much vegetables
c)
Going to a forest and pulling weeds
d)
Clearing the five trees in my backyard
15.

Which of the following is NOT a threat to biodiversity?

a)

Pollution

b)

Deforestation

c)

Invasive Species

d)

Ecological Succession

16.

The threat to biodiversity that occurs when the homes of different species are destroyed

a)

pollution

b)

habitat destruction

c)

overexploitation

d)

climate change

17.

When human-made chemicals and garbage find their way into nature and harm the air, soil, and water it is called

a)

pollution

b)

habitat destruction

c)

overexploitation

d)

climate change

18.

The largest threat to biodiversity is

a)

bacteria

b)

fungi

c)

humans

d)

plants

19.
Why are fossil fuels a nonrenewable resource? 
a)
they take millions of years to replace 
b)
they can be used over and over again
c)
they are used to heat and light homes 
d)
they cause air and water pollution 
20.
What does conserving resources mean?
a)
Use as much of the resources as you can
b)
Only use the resources at school
c)
Protecting the resource so it does not run out
21.
Which group includes ALL renewable resources?
a)
Coal, trees, water, oil
b)
Water, wind, sun, plants
c)
Minerals, sun, natural gas, water
22.
Identify the process shown in this diagram.
a)
Extinction
b)
Toxin Accumulation
c)
Pollution
d)
Biomagnification
23.
Most water pollution is the result of
a)
human activities.
b)
drought.
c)
volcanic eruptions.
d)
storms.
24.
What is the major cause for air pollution? 
a)
factories and cars
b)
cigarretes 
c)
deforestation
d)
oil spills
25.
Concentration of toxins in an organism as a result of ingesting other plants/animals in which the toxins are widely distributed
a)
biomagnification
b)
point-source pollution
c)
artificial eutrofication
d)
consumable pollution
26.
The Jones family cares about the environment. They run their dishwasher only when it is completely full. Which of the following BEST explains why they do this?
a)
To save money
b)
To recycle dish soap
c)
To reduce sewage
d)
To conserve water
27.
What does conserving resources mean?
a)
Use as much of the resources as you can
b)
Only use the resources at school
c)
Protecting the resource so it does not run out
28.
An endangered species is
a)
One whose numbers are so small that it is at risk of extinction
b)
One whose not been spotted after many years.
c)
One whose numbers are abundant.
29.
The major cause of extinction is ____________________.
a)
habitat fragmentation
b)
habitat destruction
c)
pollution
d)
poaching
30.
Scientists think people have directly caused the extinction of some species through ______________.
a)
habitat destruction
b)
poaching
c)
pollution
d)
All of these
31.
what is the leading cause of deforestation?
a)
Diseases 
b)
Housing market
c)
Agriculture and Farming
d)
Paper mill
32.
What is Deforestation?
a)
A forest in which there are too many deers.
b)
A forest party where deers hang out
c)
The adding of trees in a forest.
d)
The clearing of trees; transforming of a forest into cleared land.
33.
Where is pollution found on the earth?
 
 
  
a)
only in the air 
b)
only on the land 
c)
only in the water 
d)
on land, in the air, and in the water 
34.
Which way can people best reduce land pollution caused by large amounts of waste dumped in landfills?  
a)
They can use a water filter to use fewer water bottles.
b)
They can recycle their plastic, glass, paper, and cardboard items and only throw away non-recyclable items.
c)
They can watch less television, reducing electricity use and allowing their electronics to last much longer.
d)
They can refill large plastic containers, like those used for laundry detergent, instead of throwing them away.
35.
What do we call it when an ecosystem is able to maintain its structure and be stable over time?
a)
It is dependable.
b)
It is sustainable.
c)
It is independent.
d)
It is adaptable.
36.
Toxins accumulate in the tissues of organisms as they pass through a food chain/web.
a)
eutrophication
b)
biomagnification
c)
ecological succession
d)
symbiosis 
37.
Which of the following is a finite resource?  
a)
solar energy 
b)
wind energy
c)
trees
d)
fossil fuels 
38.
Which trophic level in a food web would accumulate the LEAST amount of a toxin, such as methylmercury or DDT?
a)
autotrophs
b)
primary consumers 
c)
herbivores
d)
secondary consumers 
39.
Which of the following results when levels of CO2 in the atmosphere increase due to fossil fuel burning?
a)
ecological succession 
b)
acid rain 
c)
ozone depletion
d)
global warming
40.
Which of the following is NOT a method of energy conservation?
a)
taking public transportation to work (bus, subway)
b)
riding your bike to work
c)
walking to work 
d)
driving alone in your car to work
41.
Conservation is the act of conserving, or protecting the environment, plants, and animals. What are some things you can do to help conserve our environment? 
a)
leave water on, leave TV on, run dishwasher with 1 plate
b)
run the washing machine with 1 shirt
c)
leave the refrigerator door open
d)
turn off water, turn off lights, turn off TV
42.

What effects does over-hunting have on an ecosystem?

a)

It increase the population of the hunted species

b)

It disrupts the food chain

c)

It feeds humans

d)

It improves the ecosystem

43.

What effect does mining have on the environment? Check all that apply.

a)

Pollutes groundwater and water ways

b)

Erosion

c)

Loss of biodiversity

d)

Increase in plant growth

44.

What effects does infrastructure have on the environment? Check all that apply?

a)

Fragmentation of habitat

b)

Easier for animals to travel long distances

c)

Decrease the risk of floods

d)

Block migration routes

45.

How does agriculture effect climate change?

a)

Increases climate change by polluting water

b)

Decreases climate change by planting crops

c)

Increases climate change by producing methane and carbon dioxide

d)

Decreases climate change by clearing forests

46.

Is hydroelectric power a renewable form of energy?

a)

Yes

b)

No

47.

What types of materials take a long time to degrade in landfills?

a)

Plastic products

b)

Paper products

c)

Aluminum products

d)

Wood products

48.

What is an invasive species?

a)

An organism that is new to an environment that has positive effects on the environment.

b)

An organism that is native to an environment that has negative effects on the environment.

c)

An organism that is new to an environment that has negative effects on the environment.

d)

An organism that is native to an environment that has positive effects on the environment.

49.

Invasive species can crowd out native species.

a)

TRUE

b)

FALSE

50.
Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.
a)
water
b)
gases
c)
heat
d)
water vapor
51.

Which of these are fossil fuels? Select all fossil fuels listed.

a)

steam

b)

coal

c)

gas

d)

oil

52.

The main human activity that releases greenhouse gases is

a)

using public transportation and there by reduce the affects of greenhouse gases.

b)

burning fossil fuels

c)

texting on cellphones

d)

eating meat

53.
What gas from the list below is a cause for global warming?
a)
Urethane
b)
Oxygen
c)
Carbon Dioxide
54.
Which natural process removes carbon dioxide from the atmosphere?
a)
forest fires
b)
volcanic eruptions
c)
cellular respiration
d)
photosynthesis
55.
Which of the following have been linked to climate change?  
a)
droughts
b)
flooding
c)
melting of polar ice caps
d)
all of the above
56.

Burning fossil fuels (like coal) to generate electricity releases sulfur dioxide and nitrogen oxides which react with gases in the atmosphere. This leads to precipitation called:

a)

ozone

b)

acid rain

c)

greenhouse gases

d)

methane

57.
What is deforestation?
a)
Clearing Earth's forests on a massive scale
b)
Eating too much vegetables
c)
Going to a forest and pulling weeds
d)
Clearing the five trees in my backyard
58.
What are the effects of deforestation ?
a)
loss of habitat
b)
increased green house gasses 
c)
soil erosion and flooding
d)
all of the above
59.

All of the following are causes for biodiversity loss, EXCEPT:

a)

Habitat Loss

b)

Invasive Species

c)

Replanting trees

d)

Pollution

60.
 Which biome is more likely to survive a change in the environment?
a)
High (rich) biodiversity
b)
Low (poor) biodiversity
61.

High biodiversity makes it more likely that the ecosystem will be able to keep functioning after a disturbance, such as disease or natural disaster.

a)

True

b)

False

62.

High biodiversity is a sign of a healthy ecosystem.

a)

True

b)

False

63.

The ozone layer protects us from

a)

Increased atmospheric heat

b)

CFCs

c)

UV rays

d)

Decreased atmospheric heat

64.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
65.
A relationship between two organisms in which one organism benefits and the other is unharmed...
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
66.
A tapeworm and a cat have this type of relationship.
a)
mutualism
b)
parasitism
c)
commensalism
d)
competition
67.
These are interactions where organisms struggle to get the resources they need.
a)
grocery shopping
b)
hunger
c)
competition
68.
An organism's role in a community is its' _____
a)
 Niche 
b)
Competition 
c)
Mutualism
d)
Parasitism
69.

According to the graph, what is causing the deer population to decrease

a)

They got sick

b)

The wolf population is decreasing

c)

The wolf population increased

d)

They ran out of food

70.
Biotic means
a)
living
b)
nonliving
71.

Predator population lags behind prey population because......

a)

Increase in predators leads to decrease in prey

b)

Increase in predators leads to increase in prey

c)

Increase in predators leads to decrease in producers

d)

Increase in producers leads to increase in prey

72.
A change in the acidity of mountain lakes would most likely be a result of
a)
A) ecological succession of the area at the top of the mountain
b)
B) the introduction of new species into the lakes
c)
C) air pollution from smoke stacks miles away
d)
D) planting grasses and shrubs around the lakes
73.
Water from nearby rivers or lakes is usually used to cool down the reactors in nuclear power plants. The release of this heated water back into the river or lake would most likely result in
a)
A) an increase in the sewage content in the water
b)
B) a change in the biodiversity in the water
c)
C) a change in the number of mutations in plants growing near the water
d)
D) a decrease in the amount of sunlight necessary for photosynthesis in the water
74.

Which gases combine with water to form acid rain?

a)

radon and carbon oxides

b)

ozone and carbon monoxide

c)

nitrogen oxides and sulfur oxides

d)

car emissions and ozone

75.

Ozone...

a)

good for humans when near Earth's ssurface

b)

a harmful pollutant no matter where it happens

c)

found near Earth's surface all the time

d)

protects Earth when high in the atmosphere, but is a pollutant near Earth's surface

76.

Protective layer in atmosphere that shields earth from UV radiation.

a)

ozone layer

b)

air pollution

c)

smog

d)

acid deposition

77.

the contamination of the atmosphere by the introduction of pollutants from human and natural sources

a)

air pollution

b)

smog

c)

acid deposition

d)

climate change

78.

What guide rates the quality of the air at a given location?

a)

Air Quality Guide

b)

Air Quality Index

c)

Air Quality Information

d)

Air Quality Bulletin

79.

What is one example of natural source pollution? 

a)

Human/Environmental Interaction

b)

Industrial Exhaust

c)

Chlorine and Ammonia

d)

Forest Fires

80.
Which of these problems can be caused by air pollution?
a)

Respiratory and Heart problems

b)
Reduced food sources for humans
c)
Increased disease for humans
d)
Decrease in global temperatures
81.

What do greenhouse gases do?

a)

Make the sky blue

b)

Trap heat inside our atmosphere

c)

Keep out sunlight

d)

Keep plants growing

82.

We can reduce air pollution by:

a)

Car pool and walk/bike more

b)

Limit factories burning fossil fuels

c)

Use more renewable energy sources

d)

All of the above

83.

what causes air pollution?

a)

Cars

b)

Fossil fuels

c)

Wildfires

d)

All of the above

84.
Dust, ash and pollen are examples of this air pollutant
a)
Lead
b)
Ground-level ozone
c)
Particulate matter
d)
Nitrogen oxides
85.

Acid rain will cause our concrete and limestone building more fragile

a)

True

b)

False

86.

According to the diagram, which of the following both have large amounts of precipitation?

a)

desert & tropical rain forest

b)

seasonal forest & tundra

c)

tundra & desert

d)

tropical rain forest & temperate rain forest

87.

Which of the following adaptations would you see from an animal that lives in a desert biome?

a)

nocturnal

b)

burrowing

c)

both nocturnal and burrowing

d)

none of the above

88.

The landscape of the tundra is characterized by having no trees. Why do you think there are no trees or other large plants in the tundra?

a)

Because of the permanently frozen ground, cold temperatures & short growing season

b)

Because it is too hot for part of the year

c)

Because it gets far too much precipitation

d)

none of these

89.

The biome where we live in Georgia (pictured) is

a)

tropical rain forest

b)

temperate deciduous forest

c)

temperate rain forest

d)

tropical seasonal forest

90.

The tundra biome occurs near the poles, while the alpine tundra

a)

occurs near the equator

b)

occurs near 30 degrees latitude

c)

occurs on mountain tops at various latitudes

d)

occurs at sea level

91.

Terrestrial biomes are defined mainly by their

a)

climate, plants & animals

b)

climate only

c)

animals & plants only

d)

none of these

92.
The tundra biome & the desert biome are both very dry, but
a)
the desert is always hot
b)
the desert has a wider temperature range
c)
the tundra has a wider temperature range
d)
they are also similar in temperature
93.
The tropical rain forest & tropical savanna biomes are similar in ___________, but ________________________________.
a)
temperature / the savannah doesn't receive enough rainfall to be a forest
b)
precipitation / the rain forest is hotter
c)
precipitation / the savanna is cooler
d)
temperature / the rain forest doesn't receive enough sunlight to be a savanna
94.
The farther a biome is from the equator, the more we would expect it to be 
a)
warmer & wetter
b)
warmer & drier
c)
cooler & wetter
d)
cooler & drier
95.

The biome shown in the climatogram above would best be described as a:

a)

temperate deciduous forest

b)

desert

c)

tundra

d)

tropical rain forest

96.

What factors influence the type of plants grow in a biome?

a)

temperature & precipitation

b)

temperature only

c)

precipitation only

d)

none of these

97.

Why would the adaptations pictured be useful in the tropical rainforest?

a)

low temperature, high rainfall

b)

low rainfall, high temperature

c)

high rainfall, thin soil

d)

high temperature, frozen soil

98.

Which terrestrial biome has the most biodiversity?

a)

taiga

b)

tundra

c)

temperate deciduous forest

d)

tropical rainforest

99.

Characteristics of this biome include: warm year round, large herbivores and predators, drought resistant plants, animals give birth during the rainy season.

a)

tropical rainforest

b)

savanna

c)

desert

d)

tundra

100.

An animal adaptation for this biome is a change in fur color between the warmer and colder seasons.

a)

temperate forest

b)

tropical rainforest

c)

taiga

d)

none of these

101.

If you start near the North Pole and head south to the equator what biomes would expect to come across?

a)

tundra, then grassland, then tropical rainforest

b)

tropical rainforest, then deciduous forest, then desert

c)

desert, then deciduous forest, then tropical rainforest

d)

desert, then taiga, then more desert

102.

As altitude ____________, temperature _____________.

a)

decreases / decreases

b)

increases / decreases

c)

increases / increases

d)

none of these

103.

As altitude or latitude increases...

a)

vegetation increases

b)

rocks increase

c)

there is no change in vegetation

d)

vegetation decreases

104.

The air in the desert has ______ humidity while the air in the tropical rainforest has _______ humidity.

a)

high / low

b)

low / high

c)

low / low

d)

high / high

105.

Biodiversity is influenced by factors like precipitation and soil quality because in most ecosystems overall biodiversity relies on a wide variety of...

a)

Plants and other Producers

b)

Apex Predators

c)

Greenhouse Gases

d)

Rocks & Dirt

106.

The two main benefits of biodiversity in most ecosystems is that it...

a)

increases stability and decreases resilience.

b)

decreases stability and increases resilience.

c)

increases both stability and resilience.

d)

decreases both stability and resilience.

107.

In general terms, the two most biodiverse biomes on Earth are...

a)

Rivers & Mountains

b)

Desert & Tundra

c)

Redwood Forests & Savanna

d)

Rainforests & Coral Reefs

108.

The current trend of global warming is primarily caused by...

a)

an increase of carbon dioxide and other greenhouse gases in the atmosphere.

b)

an increased rate of volcanic eruptions.

c)

expansion of rainforests and other large photosynthetic carbon sinks.

d)

the loss of endangered species in biodiversity hotspots.

109.

Which of the following is a direct consequence of polar ice caps melting due to global warming?

a)

Coral Bleaching

b)

Increased Wildfire Frequency & Severity

c)

Deforestation

d)

Rising Sea Levels

110.

Which of the following conditions in coral reef ecosystems leads to coral bleaching?

a)

Plastic Pollution

b)

Ocean warming & acidification

c)

Ocean cooling and ice cap melt

d)

Overharvesting critical fish species

111.

Which of the following is NOT a consequence of global warming and climate change?

a)

increased storm severity

b)

more frequent wars and conflicts over critical natural resources

c)

increased biodiversity

d)

coral bleaching

112.

Which of the following is NOT an anthropogenic (caused by humans) ecological disturbance?

a)

Deforestation

b)

Pollution

c)

Overharvesting

d)

Earthquakes

113.

Deforestation has an especially severe impact on ecosystem health when forests are replaced with...

a)

Monoculture

b)

Native Species

c)

Biodiversity Hotspots

d)

"No Take" Zones

114.

A new species introduced to an ecosystem can become invasive when...

a)

there are many predators present who will eat the introduced species.

b)

the specific adaptations of the introduced species allow it to outcompete native species.

c)

there are few food sources available for the introduced species.

d)

the introduced species is not well adapted to its original habitat.

115.

Which of the following solutions can help to reduce the ecological impact of habitat fragmentation?

a)

"No Take" Zones

b)

Conserving Species in Zoos & Aquariums

c)

Wildlife Corridors

d)

Recycling Plastics

116.

A drastic reduction in the biodiversity of an ecosystem can be observed after the removal of...

a)

Keystone Species

b)

Invasive Species

c)

Harvest Limitations

d)

Monoculture

117.

The process of ecological succession after a disturbance often begins with...

a)

tall trees to form a mature canopy.

b)

shrubs and other plants of intermediate height.

c)

native grasses and wildflowers.

d)

apex predators and large mammals.

118.

The process of "building soil" after a major ecological disturbance, such as a volcanic eruption, is known as...

a)

Secondary Succession

b)

Primary Succession

c)

Tertiary Succession

d)

Climax Community Formation

119.

The first species to live in an environment after a major ecological disturbance are known as...

a)

Pioneer Species

b)

Climax Community Species

c)

Intermediate Species

d)

Consumer Species

120.

Which ecological nutrient cycle relies on photosynthesis and respiration?

a)

Carbon Cycle

b)

Nitrogen Cycle

c)

Phosphorus Cycle

d)

Hydrologic Cycle

121.

Which ecological nutrient cycle relies on the slow erosion and build-up of rocks?

a)

Carbon Cycle

b)

Nitrogen Cycle

c)

Phosphorus Cycle

d)

Hydrologic Cycle

122.

Which ecological nutrient cycle relies heavily on bacteria to "fix" an important nutrient by converting it from atmospheric gas to a form that can be absorbed by plants?

a)

Carbon Cycle

b)

Nitrogen Cycle

c)

Phosphorus Cycle

d)

Hydrologic Cycle

123.

Of the three main nutrient cycles we studied in this unit, which two rely most heavily on decomposers?

a)

Carbon & Nitrogen

b)

Phosphorus & Carbon

c)

Nitrogen & Phosphorus

d)

Carbon & Hydrologic

124.

Based on the concept of biomagnification, which of the following organisms would likely contain the HIGHEST concentration of microplastics and other toxins?

a)

A small herbivore, such as a grasshopper

b)

A large herbivore, such as a cow

c)

An apex predator, such as a great white shark

d)

A secondary consumer, such as an anchovy

125.
What is the main goal of conservation biology?
a)
Protecting habitats
b)
Create new laws
c)
Create pollution
d)
Spend more money
126.
A form of pollution that destroys underwater habitats for fish and other species due to fertilizer is:
a)
Eutrophication
b)
Biological magnification
c)
Fragmentation
d)
Acid precipitation
127.
Climate change can lead to _______________.
a)
sea level rise and floods in coastal areas
b)
droughts
c)
spread of dengue fever and malaria
d)
all of the above
128.
What is primarily causing climate change
a)
wind 
b)
the sun
c)
greenhouse gasses
d)
water
129.
The data in the graph can be useful in explaining the greenhouse effect when they are compared with
a)
volcanic activity
b)
sunspot activity
c)
global temperatures
d)
nitrous oxide production
130.
The biggest threat to biodiversity is 
a)
climate change
b)
overharvesting
c)
habitat loss
d)
pollution 
131.
Conservation is the act of conserving, or protecting the environment, plants, and animals. Why is this so important? What are some things you can do to help conserve our environment? 
a)
leave water on, leave TV on, run dishwasher with 1 plate
b)
run the washing machine with 1 shirt
c)
leave the refrigerator door open
d)
turn off water, turn off lights, turn off TV
132.
Which of these describes a species that has become extinct?
a)
fewer members of the species are dying than being born
b)
more members of the species are dying than being born
c)
very few members of a species are alive
d)
all members of a species have died
133.
What is NOT factor that threatens biodiversity?
a)
Population growth
b)
Habitat Loss
c)
Overexploitation
d)
Clean water
134.
Overexploitation was once the main cause of what?
a)
Biodiversity
b)
Extinction
c)
pollution
135.
How can habitat disruption affect biodiversity?
a)
It can lead to loss of biodiversity.
b)
It will lead to new species taking over all of the habitats.
c)
It will lead to climate change.
d)
It will cause the animals to get sick.
136.
Pollution damages ecosystems and decreases biodiversity by doing what?
a)
Causing  genetic diversity
b)
Causing species diversity
c)
Releasing harmful substances
137.
An event  in which a large percentage of all living species become extinct in a relatively short period of time.
a)
Habitat fragmentation 
b)
Mass extinction
c)
Overexploitation
d)
Background extinction

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