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Ecosystem Stability

Total questions: 153

Worksheet time: 2hrs 10mins

Name
Class
Date
1.

Both species benefits by the very close interaction

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Predator/Prey

2.

One species benefits and the others is harmed by living on or inside the host

a)

Parasitism

b)

Commensalism

c)

Mutualism

d)

Symbiosis

3.

One species benefits and the other is unaffected

a)

Mutualism

b)

Commensalism

c)

Parasitsim

d)

Symbiosis

4.

Relationship between a bear and a fish:

a)

Parasitism

b)

Predator/Prey

c)

Symbiotic

d)

Commensalism

5.

Level of interactions between the biotic and abiotic factors in a community:

a)

Community

b)

Ecosystem

c)

Biome

d)

Biosphere

6.

Sort which factors in an ecosystem are biotic or abiotic.

Categorize the following

A clam's shell

Bacteria

A family of birds

Amount of rainfall

Fossils

Temperature

Biotic
Abiotic
7.

Areas on earth are characterized by having similar climate, animals, and plants. What are these areas called?

a)

Community

b)

Biome

c)

Biosphere

d)

Ecosystem

8.

Which level of Ecology includes the all parts of Earth that support life?

a)

Biome

b)

Biosphere

c)

Ecosystem

d)

Ecology

9.

All the different organisms that live in a specific area are part of a:

a)

Biosphere

b)

Community

c)

Ecosystem

d)

Biome

10.

Similar organisms that are able to breed with eachother

a)

Community

b)

Species

c)

Population

d)

Ecosystem

11.

Organisms that feed on recently dead organisms:

a)

Detritivore/Detrivore

b)

Omnivore

c)

Carnivore

d)

Decomposer

12.

Organisms that eat both plants and other animals or insects.

a)

Carnivore

b)

Omnivore

c)

Detritivore

d)

Herbivore.

13.

Bacteria and fungi break down organisms into organic matter. What type of consumer?

a)

Scavenger

b)

Carnivore

c)

Herbivore

d)

Decomposer

14.

Organisms that eat plants for energy.

a)

Carnivore

b)

Omnivore

c)

Decomposter

d)

Herbivore

15.

There are usually no more than four trophic levels in a food chain. Why?

a)

Energy gets lost (metabolism) and too many links cannot be supported.

b)

Energy is gained (metabolism) and too many links cannot be supported.

c)

There are not very many animals on earth.

16.

What type of organisms make their own food using the sun's energy?

a)

Decomposer

b)

Autotroph

c)

Omnivore

d)

Carnivore

17.

In a food chain, what is the role of the plant?

a)

Consumer

b)

Heterotroph

c)

Producer

d)

Primary consumer

18.

What is the main way energy is lost in a food chain?

a)

It gets lost in the woods.

b)

It is lost as energy goes back to the sun.

c)

It is lost as heat during cellular respiration.

d)

It gets lost as atmospheric heat.

19.

When two animals fight for a mate:

a)

Symbiosis

b)

Parasitism

c)

Commensalism

d)

Competition

20.

Place the levels of organization in order (smallest > largest).

a)

Organelle

b)

Cell

c)

Tissue

d)

Organ

e)

Organ System

1)
2)
3)
4)
5)
21.

An energy pyramid shows the loss of energy at each trophic level. Why is energy not really lost?

a)

Some energy is converted into waste and heat energy.

b)

Some energy goes back to the sun.

c)

Some energy is recycled.

d)

All energy gets transfered to the next organism.

22.

How much energy is passed on from one trophic level to the next?

a)

80%

b)

10%

c)

50%

d)

none

23.

How does the amount of energy change as it moves up an energy pyramid?

a)

Stays the same

b)

Decreases

c)

Increases

24.

What branch of biology that deals with the interactions among organisms and between organisms and their environment?

a)

Biology

b)

Ecology

c)

Immunology

d)

Environmentology

25.

Removing which organism would have the largest effect on the ecosystem?

a)

Hawk

b)

Fox

c)

Frog

d)

Grass

26.

If hawks were removed from this food web it would become ____________ stable

a)

Identically

b)

Less

c)

More

27.

What, if added to this food web, would COMPETE with the primary consumers for resources?

a)

Coyote

b)

Mountain lion

c)

Deer

28.

What things could make this ecosystem LESS stable?

a)

A disturbance that leads to ecological succession

b)

An invasive species

c)

Humans doing things to conserve the native habitat

29.

Which organisms have the MOST energy?

a)

Tertiary consumers

b)

Primary consumers

c)

Producers

30.

Which organism would be a PRIMARY consumer?

a)

Grass

b)

Antelope/deer thing

c)

Lion

31.

If you started with 13,000 KJ of energy- which trophic level would get 130 KJ of energy?

A
B
C
D
32.

What are important organisms for decomposition AND nitrogen fixation in ecosystems?

a)

Bacteria

b)

Plants

c)

Fungus

d)

Consumers

33.

Match the following human impacts to the correct cycle

a)

Greenhouse gasses are trapped in the atmosphere, leading to temperature increases. Deforestation leads to increases in ocean concentrations.

1.

Carbon

b)

The burning of fossil fuels and addition of fertilizers to crops can cause dead zones in the ocean

2.

Nitrogen

c)

Improperly disposed of trash can end up in rivers and ultimately the ocean

3.

Water (hydrologic)

34.

Match the following levels of organization to their descriptions

a)

An individual

1.

Species (organism)

b)

A group of the same species that live in the same area

2.

Population

c)

All the BIOTIC things in an area

3.

Community

d)

The BIOTIC and ABIOTIC things in an area

4.

Ecosystem

e)

The entire Earth as a whole

5.

Biosphere

35.

Relationship in which one organism BENEFITS and one NEITHER BENEFITS NOR IS HARMED ​ ​ (a)   ​ ​ ​

Relationship in which one organism BENEFITS and one IS HARMED ​ (b)  

Relationship in which one organism KILLS AND EATS ANOTHER ​ (c)  

Relationship in which BOTH ORGANISMS BENEFIT ​ (d)  

Relationship in which two organisms FIGHT FOR LIMITED RESOURCES ​ (e)  

Choose from the below words
Commensalism
Parasitism
Predation
Mutualism
Competition
36.

Organize these options into the right categories

Categorize the following

Disease

Food availability

Drought

Flood

Density dependent limiting factors
Density independent limiting factors
37.

Where on this graph is "carrying capacity" located?

A
B
C
38.

Who in this food chain is responsible for returning nutrients to the soil for plants to use?

A
B
C
D
E
F
39.

Water is lost to the abiotic parts of the biosphere from the biotic parts by _____.

a)

precipitation

b)

photosynthesis

c)

transpiration

d)

infiltration

40.

Nitrogen is released to the abiotic parts of the of the biosphere from the processes of death and ____.

a)

decay by bacteria

b)

infiltration of the groundwater

c)

runoff

d)

lightning in the storm and clouds

41.

Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through _____.

a)

burning of forests

b)

photosynthesis

c)

combustion of fossil fuels

d)

all of these

42.

cougars are predators that often eat weakened or diseased animals. this is a description of the ___ of cougars.

a)

habitat

b)

community

c)

niche

d)

none of these

43.

An ecologist who studies how several species in an area interact with one another and with the abiotic parts of the environment is interested in the biological organization level called a(n) _____.

a)

organism

b)

population

c)

community

d)

ecosystem

44.

Parasitism, mutualism, and commensalism are examples of _______.

a)

food chains

b)

food webs

c)

symbiosis

d)

trophic levels

45.

Both the alga and the fungus are benefited from their relationship in a lichen. This relationship is one of ______.

a)

coomensalism

b)

mutualism

c)

parasitism

d)

symbolism

46.

Before plants can reuse many organic materials, the materials must be broken down by _______.

a)

parasites

b)

viruses

c)

decomposers

d)

scavengers

47.

study of how living things relate to each other and their environment

a)

evolution

b)

ecology

c)

parasitology

d)

ethology

48.

relationship between organisms in which both organisms benefit

a)

parasitism

b)

commensalism

c)

symbolism

d)

mutualism

49.

network of interconnected food chains

a)

ecosystem

b)

food web

c)

trophic levels

d)

biological community

50.

relationship between organism in which one organism benefits and the other is neither harmed or benefited

a)

parasitism

b)

mutualism

c)

commensalism

d)

symbolism

51.

simple model for showing how matter and energy move through an ecosystem

a)

food web

b)

trophic levels

c)

food chain

d)

habitat

52.

The place where an organism spends its life.

a)

niche

b)

habitat

c)

biolgical community

d)

ecosystem

53.

manufactures food using energy from the sun or from chemical compounds

a)

autotroph

b)

heterotroph

c)

scavenger

d)

decomposer

54.

step in the passage of energy and matter through an ecosystem

a)

food chain

b)

trophic level

c)

habitat

d)

niche

55.

obtains energy and nutrients from autotrophs

a)

chemotroph

b)

heterotroph

c)

anerobe

d)

parasite

56.

A niche is ________________.

a)

The biotic and abiotic factors in an ecosystem.

b)

The roll we had with our meal.

c)

The habitat of an organism.

d)

The role (job) of an organism in an ecosystem.

57.

Which choice best describes a producer?

a)

An organism that does not eat.

b)

An organism that uses moonlight to directly make its own food.

c)

An organism that uses sunlight directly to make its own food.

d)

An organism that gets it food from other organisms.

58.

Which definition best defines consumer?

a)

Organisms that do not eat or drink.

b)

Organisms that eat producers or other organisms.

c)

Organisms that only drink water.

d)

Organisms that eat sunlight.

59.

True or false: An ecosystem with high genetic diversity is healthier than an ecosystem with low genetic diversity.

a)

True

b)

False

60.

Species richness is

a)

a measure of how all of the individual organisms in an ecosystem are balanced between the different species.

b)

the total number of different species found in an ecosystem

61.

Based on the graph shown, what is the effect of removing a keystone species on an ecosystem?

a)

richness oscillates between extremes

b)

richness stabilizes

c)

richness increases

d)

richness decreases

62.
Competition can occur between organisms for both biotic and abiotic resources.  Competition for biotic resources can be illustrated by organisms fighting for a limited amount of –
a)
air to breath
b)
mates for breeding
c)
water to drink
d)
space for nesting
63.
Which organisms in the food web shown to the right are predators that compete for the same prey in this environment?
a)
Coyotes and rabbits
b)
White-tailed deer and rabbits
c)
Leafy weeds and cotton rats
d)
Bobcats and coyotes
64.
The struggle between organisms to survive as they attempt to use the same resource
a)
Predator
b)
Prey
c)
Competition
d)
Adaptation
65.

The variety of life in an ecosystem.

a)

Pioneer Species

b)

Biodiversity

c)

Abiotic Factors

d)

Producers

66.

The population limit in an ecosystem due to limited resources or predators.

a)

Biodiversity

b)

Biotic factors

c)

Abiotic factors

d)

Carrying capacity

67.

The things that limit population increases. Predators, food shortages, water shortages, light shortages.

a)

Biodiversity

b)

Abiotic Cyles

c)

Limiting Factors

d)

Pioneer Species

68.

The ability to reproduce under ideal conditions, enough space, food, water, lack of predators.

a)

Primary Consumers

b)

Pioneer Species

c)

Biotic Potential

d)

Abiotic Factors

69.

Populations that are introduced to an area and “take over.”

a)

Abiotic Population

b)

Biotic Potential

c)

Native Species

d)

Invasive species

70.

The ability of an ecosystem to stay stable and recover quickly after a disturbance.

a)

Ecosystem Instability

b)

Ecosystem Stability

c)

Biotic Potential

d)

Biodiversity

71.

A biological community that includes various species and their physical environment (Biotic and Abiotic Factors).

a)

Pioneer Species

b)

Ecological Potential

c)

Ecosystem

d)

Ecological Impact

72.

Any single living individual, and can refer to a single human, animal, plant, protista, bacteria, or fungi.

a)

Organ System

b)

Biome

c)

Population

d)

Organism

73.

Organisms who are members of the same species in an ecosystem.

a)

Population

b)

Community

c)

Organism

d)

Biodiversity

74.

Which of the following is an abiotic factor?

a)

Grass

b)

Spider

c)

Turtle

d)

Rock

75.

What type of growth is demonstrated in the graph?

a)

Exponential

b)

Carrying capacity

c)

Linear

d)

Negative

76.

Leveling off of the population after the maximum number the environment can support has been reached.

a)

Exponential

b)

Carrying capacity

c)

Linear

d)

Negative

77.

Which of the following would likely be a limiting factor to a population?

a)

Abundance of food

b)

Living near a water source

c)

Presence of a natural predator

d)

Multiple sources for shelter

78.

Which of the following demonstrates population growth when there is limited available water in an area?

a)
b)
c)
79.

Habitat availability increases for a population. How would the carrying capacity of the prey change?

a)

The carrying capacity would increase as more resources become available.

b)

Carrying capacity occurs independent of factors in the environment.

c)

The carrying capacity would decrease as more resources became available.

d)

The carrying capacity is set in an environment and cannot change.

80.

When Yellowstone National Park was created in the late 1800s, wolves were on the decline. The last wolves in Yellowstone were killed in 1926, but in the 1800s, there were between 100-160 wolves in the park. In 1995, gray wolves were reintroduced to the park.


Which graph (drawn in red) below shows a prediction of how the population would change if there was less water available in the ecosystem?

a)
b)
c)
d)

There would be no change to carrying capacity.

81.

What is an effect of too much deforestation?

a)

Increase CO2 in the atmosphere

b)

Too much Nitrogen in the soil

c)

Decrease in CO2 in the atmosphere

d)

Increase in fish in the ocean.

82.

A mongoose eating ticks off a warthog, or a starling eating ticks off a cow are examples of what type of symbiotic relationship?

a)

Cooperation

b)

Parasitism

c)

Commensalism

d)

Mutualism

83.
When predator numbers decrease, prey numbers ____________ because fewer of them are being consumed.
a)
decrease
b)
increase
c)
stay the same
d)
divide in half
84.

The maximum population size of a species that the environment can sustain:

a)

Prey

b)

Decomposer

c)

Carrying Capacity

d)

Commensalist

85.

An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms, such as a mushroom, is a:

a)

Predator

b)

Autotroph

c)

Producer

d)

Decomposer

86.

Which term describes this statement: All the populations of all the different species that live together in a particular area

a)

Mutualism

b)

Community

c)

Commensalism

d)

Predator/Prey

87.

Organisms of two species using the same limited resource and having a negative impact on one another, such as hyenas and lions both hunting zebra, represent what type of relationship?

a)

commensalism

b)

predator-prey

c)

mutualism

d)

competition

88.

In a predator-prey relationship, when the population of the predator increases, the population of the prey will ____________.

a)

Increase

b)

Remain Stable

c)

Decrease

d)

Change unpredictably

89.

An organism that obtains energy from consuming the bodies of other organisms is known as a:

a)

Mutualist

b)

Autotroph

c)

Producer

d)

Heterotroph

90.
______________ occurs when more than one individual or population tries to use the same limited resource.
a)
Niche
b)
Predator-prey
c)
Availability
d)
Competition
91.

Which of the following is true about competition?

a)

Controls population size

b)

Ensures everyone eats

c)

Keeps everyone happy

d)

Is only between 2 males

92.

The non-living part of the natural environment where an animal, plant or other organism lives…

a)

niche

b)

habitat

c)

community

d)

ecosystem

e)

biosphere

93.

This is the job or role of a specific organism within its habitat...

a)

producer

b)

prey

c)

carnivore

d)

niche

e)

photosynthesis

94.

This is transferred between organisms in a food chain and is represented by arrows…

a)

nutrients

b)

photosynthesis

c)

niche

d)

energy

e)

food web

95.
The largest part of an ecosystem is always the ________________.
a)
Primary Consumers
b)
Primary Producers
c)
Quarternary Consumers
d)
Secondary Consumers
96.
In this image, the grass is the ______________.
a)
Primary Consumer
b)
Secondary Consumer
c)
Heterotroph
d)
Producer
97.

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

a)

waves

b)

sunlight

c)

bacteria

d)

rotifers, water fleas and tadpoles

98.
What might happen if you remove a primary consumer from the ecosystem?
a)

There would be more food for secondary consumers.

b)

The number of primary consumers would increase.

c)

The number of plants would increase.

d)

The number of secondary consumers would increase.

99.

All energy on Earth ultimately comes from what source? (a)  

Choose from the below words
Water
Sun
Consumers
Oxygen
100.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
101.

Which of the following is a food chain in the food web?

a)

Rabbit, mountain lion, fox

b)

Grass, grasshopper, frog, snake, hawk

c)

Grass, caterpillar, robin, mountain lion

d)

Tree, deer, mountain lion, fox

102.

A food web is a single linear path showing the flow of energy from one organism to another. It is not an interconnected relationship diagram of organisms in a community.

a)

TRUE

b)

FALSE

103.
Question Image

Match the following:

a)

Producer/Autotroph

1.

Plant

b)

Secondary Consumer

2.

Bird

c)

Tertiary Consumer

3.

Snake

d)

Top Predator

4.

Owl

e)

Herbivore

5.

Grasshopper

104.
In a food web, arrows point at:
a)
who gets energy.
b)
who gets eaten.
105.
If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?
a)
10 Kcal
b)
1 Kcal
c)
100 Kcal
d)
1000 Kcal
106.

Which is a SECONDARY CONSUMER in this food web?

a)

Snake

b)

Mouse

c)

Grass

d)

Wildflowers

107.
Cannot make its own food
a)
heterotroph
b)
autotroph
c)
producer
d)
decomposer
108.

Match the following.

a)

Producer

1.

Makes its own food

b)

Consumer

2.

Consume other organisms for food

c)

Decomposer

3.

Breaks down dead organisms into nutrients

109.

keystone species

a)

a system of interlocking and interdependent food chains.

b)

All the living organisms that inhabit an environment

c)

A series of steps in which organisms transfer energy by eating and being eaten

d)

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

110.

A species that plays a critical role in the health, maintenance, growth, or definition of an ecosystem.

a)

keystone

b)

invasive

c)

engineer

d)

predator

111.

One of the defining ​​ characteristics of a ​ (a)   species is that it fills a critical ​ (b)   role that no other ​ (c)   can. Without them, the entire ​ (d)   would radically change-or cease to ​ (e)   altogether.

Choose from the below words
keystone
ecological
species
ecosystem
exist
112.

Place the energy in the correct order from the bottom of the pyramid to the top.

a)

100 kg, 10000 kg, 1 kg

b)

1 kg, 10 kg, 100 kg, 1000 kg

c)

1000 kg, 100 kg, 10 kg, 1 kg

d)

10 kg, 100 kg, 1000 kg, 1 kg

113.

Which of the following is not a possible process that results in ammonification?

a)

photosynthesis

b)

decomposition

c)

nitrogen fixation

d)

fertilizer production

114.

What happens to carbon during the process of photosynthesis?

a)

CO2 is released by plants

b)

CO2 is taken up by plants

c)

organic carbon is taken up through plant roots

d)

carbon is lost through heat

115.

All the gases surrounding Earth are known collectively as the...

a)

hydrosphere

b)

biosphere

c)

atmosphere

d)

lithosphere

116.

The process of breathing in oxygen and releasing carbon dioxide into the air (or water) is...

a)

Assimilation

b)

Decomposition

c)

Photosynthesis

d)

Respiration

117.

Which of the following best describes weathering and erosion?

a)

when it rains on rocks

b)

decay of dead organisms

c)

break down of rocks that wash into the water

d)

when a volcano erupts

118.

Which of the following best describes the Greenhouse Effect?

a)

when solar radiation reflects off the atmosphere

b)

heat is retained in Earth's atmosphere by greenhouse gases

c)

plants grow better when a greenhouse is filled with CO2

d)

when solar radiation hits Earth's surface directly

119.

Which gas is most abundant in the atmosphere?

a)

carbon dioxide

b)

methane

c)

nitrous oxide

d)

nitrogen gas

120.

Which of the following does NOT release carbon dioxide into the atmosphere?

a)

volcanic activity

b)

respiration

c)

photosynthesis

d)

fossil fuel combustion

121.

The most abundant Greenhouse Gas in the atmosphere is...

a)

carbon dioxide

b)

nitrogen gas

c)

nitrate

d)

oxygen

122.

The process of making nitrites and nitrates is...

a)

denitrification

b)

nitrogen fixation

c)

nitrification

d)

ammonification

123.

What does denitrification do?

a)

converts fixed nitrogen into nitrogen gas

b)

converts nitrogen gas into fixed nitrogen

c)

makes nitrates

d)

makes ammonia

124.

The process that releases carbon and nitrogen into the soil through decay is...

a)

erosion

b)

photosynthesis

c)

decomposition

d)

assimilation

125.

Which of the following would not be included in the hydrosphere?

a)

ocean

b)

trees

c)

surface water

d)

groundwater

126.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
127.

How does carbon in a grass plant get into a lion?

a)

The lion eats an antelope that ate the grass

b)

Carbon from grass doesn't end up in a lion.

c)

The lion absorbs the carbon given off by transpiration

d)

The lion breathes in carbon given out by the plant

128.
Which of the following add carbon dioxide to the atmosphere?
a)
volcanoes
b)
combustion of fossil fuels
c)
animal and plant respiration
d)
all of these
129.
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?
a)
lower levels of ozone in the atmosphere
b)
lower levels of nitrogen in the atmosphere
c)
higher levels of carbon dioxide and other greenhouse gases in the atmosphere
d)
higher levels of oxygen in the atmosphere
130.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
131.
Organisms that need nitrogen to survive
a)
only plants
b)
only animals
c)
only bacteria
d)
all living organisms
132.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
133.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
134.

features of environment that are alive or were once alive

a)

biotic

b)

abiotic

c)

inbiotic

d)

biography

135.

How nitrogen is "fixed" into useable form for plants

a)

only through action of bacteria

b)

only through lightning

c)

through action of bacteria & lightning

d)

through photosynthesis

136.

What part of the carbon cycle is represented by cow releasing CO2 back into the atmosphere?

a)

photosynthesis

b)

decomposition

c)

respiration

d)

combustion

137.

Biodiversity, aka biological diversity, usually refers to

a)

the same species in a general location

b)

the number of different species in a given area

c)

the number of animal species in a given area

d)

the number of plant species in a given area

138.
In what way are humans most impacting the biodiversity of ecosystems around the world?
a)
a. We are putting too many organisms in zoos or keeping them as pets
b)
b. We are increasing biodiversity by breeding new species
c)
c. We are destroying the habitats of a large number of species
d)
d. Recreational hunting
139.
Scientists think people have directly caused the extinction of some species through ______________.
a)
habitat destruction
b)
poaching
c)
pollution
d)
All of these
140.
Why are invasive species such a problem in their new ecosystem?
a)
a. The new ecosystem isn�t adapted to their presence
b)
b. The new ecosystem is probably weaker than the native one
c)
c. They have mutations making them more adapted to the new ecosystem
d)
d. They cause mutations in the native species
141.

Which applies to this environmental problem:


Humans produce an excessive amount of artificial light which can interfere with natural cycles of light/dark in an environment and can confuse animals.

a)

Habitat Loss

b)

Invasive Species

c)

Pollution

d)

Population Growth

e)

Over-exploitation

142.

How is the current decline in biodiversity different from the previous mass extinctions that Earth has experienced?

a)

It is happening much more slowly

b)

This time it is not really happening

c)

It is made worse by an asteroid hitting Earth

d)

This is being caused by humans

143.

The excessive use of species that have economic value is known as

a)

pollution

b)

habitat destruction

c)

over - exploitation

d)

climate change

144.

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.

145.

Which applies to this environmental problem:


The zebra mussel is outcompeting native species and causing damage in the Missouri River.

a)

Habitat Loss

b)

Invasive Species

c)

Pollution

d)

Population Growth

e)

Over-exploitation

146.

Which applies to this environmental problem:


As more people are added to the Earth, more resources are required to meet their needs.

a)

Habitat Loss

b)

Invasive Species

c)

Pollution

d)

Population Growth

e)

Over-exploitation

147.
Humans are causing extiction in which ways?
a)
By over hunting animals for food or products.
b)
By destroying the natural habitat of species.
c)
By polluting the environments of the world.
d)
All of the above.
148.

Which applies to this environmental problem:


The albatross are dying from eating plastic items that look like food.

a)

Habitat Loss

b)

Invasive Species

c)

Pollution

d)

Population Growth

e)

Over-exploitation

149.

Which applies to this environmental problem:


Shark fin soup is consumed by millions of people in South East Asia.

a)

Habitat Loss

b)

Invasive Species

c)

Pollution

d)

Population Growth

e)

Over-exploitation

150.
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
151.

True or False: Human beings are wiping out species much faster than nature creates them, causing what scientists call a "6th extinction"

a)

true

b)

false

152.

If a scientist in New Zealand was studying how a group of herbivores interacted with a group of omnivores, and all of their abiotic surroundings, what level of ecology would she be studying? (a)  

Choose from the below words
Community
Population
Species
Ecosystem
Biome
153.

If there are 100 KJ of energy available at the secondary consumer level, how many KJ of energy are available at the producer level?

(a)  

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