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Human Impact on Ecosystems

Total questions: 25

Worksheet time: 14mins

Name
Class
Date
1.
Which of the following issues is the cause of the other environmental impacts caused by humans?
a)
pollution
b)
human population growth
c)
climate change
d)
habitat destruction 
2.
Which of the following is a finite resource?  
a)
solar energy 
b)
wind energy
c)
trees
d)
fossil fuels 
3.
Which of the following ecological problems is NOT the result of burning fossil fuels? 
a)
greenhouse effect
b)
ozone depletion 
c)
climate change 
d)
acid rain
4.
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
5.
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
6.
Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This level of direct harvesting could cause
a)
ecosystems to be improved for future generations
b)
ecosystems to be severely damaged
c)
the restoration of environmental stability
d)
all other fish species to increase in number
7.
Pollution can cause harm to the ___________.  
a)
air
b)
land
c)
water
d)
all of the above
8.
Biodiversity refers to
a)
extinct species
b)
the variety of species on Earth
c)
nonrenewable resources
d)
the rate of species decline
9.
What effect will an invasive species have on the carrying capacity of an ecosystem?
a)
The carrying capacity will increase
b)
The carrying capacity for everyone will decrease
c)
The carrying capacity will only decrease for those in competition for same resource
d)
The carrying capacity for all animals will stay the same
10.
Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:
a)
Parasitism between kudzu and the native plants
b)
A predator prey relationship between ground plants and kudzu
c)
Competition occurring between the native and invasive species
d)
Commesalism occurring between the kudzo and native plants
11.

What is the direct cause of rising sea levels?

a)

Melting Sea Ice

b)

Melting Land Ice

c)

Climate Change

12.

Melting land ice...

a)

causes sea levels to rise because it adds water to the ocean.

b)

does not cause sea levels to rise because the water fills the space left by the melted sea ice.

13.
Which of the following is the best conclusion that can be made from this graph?
a)
atmospheric carbon dioxide levels have been decreasing since 1960
b)
Hawaii has a lot of carbon dioxide
c)
humans have been working hard to decrease carbon dioxide levels
d)
atmospheric carbon dioxide levels have increased steadily since 1960
14.

Which of the following have been changed or altered due to climate change ?

a)

droughts

b)

flooding

c)

melting of polar ice caps

d)

all of the above

15.

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

16.

Which of the following is contributing to an INCREASE in carbon dioxide in the atmosphere?

a)

deforestation

b)

photosynthesis

c)

oceans

d)

all of the above

e)

the loss of animal species

17.
How does the concentration of carbon dioxide in the atmosphere affect climate?
a)
As carbon dioxide concentrations increase, temperatures increase
b)
As carbon dioxide concentration increase, temperatures decrease.
c)
Carbon dioxide concentrations have no affect on climate
d)
As carbon dioxide concentrations increase, temperatures become more random.
18.
What is one way that carbon enters the atmosphere?
a)
Sunlight
b)
Vehicle emissions/Exhaust
c)
Ocean uptake
d)
Rain
19.

This graph shows the sources of the nitrogen entering the Gulf of Mexico as pollution. What is one conclusion you can make based on the information in the graph?

a)

Nitrogen that comes from the atmosphere is more harmful than nitrogen that comes from crops.

b)

Most nitrogen pollution found in the Gulf of Mexico comes from farming crops.

c)

Corn and soybeans are the only crops associated with nitrogen pollution.

d)

Nitrogen is not a problem in the Gulf of Mexico.

20.

Which process is the ocean primarily responsible for in the water cycle?

a)

Evaporation

b)

Condensation

c)

Transpiration

d)

Precipitation

21.

What is one way humans are trying to positively impact the ocean?

a)

Fishing

b)

Creating artificial reefs

c)

Harvesting oil and natural gas

d)

Transporting goods in ocean vessels

22.

Which of the following is NOT a source of pollution in the ocean?

a)

Nitrogen and phosphorus from fertilizers used on land.

b)

Oils found on city streets.

c)

Sand drifting along the bottom of the ocean floor.

d)

Emissions from gas-burning vehicles.

23.
Increased industrialization will most likely
a)
decrease available habitats 
b)
increase environmental carrying capacity 
c)
increase the stability of ecosystems 
d)
decrease global warming
24.
Which human activity would preserve nonrenewable resources?
a)
deforestation
b)
removing carnivores from a forest 
c)
recycling
d)
heating homes with fossil fuels  
25.
Approximately 75 percent of the Earth's surface is covered in water. So why is water considered such a precious resource?
a)
The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere
b)
Only a small fraction of the Earth's water is freshwater available for drinking and irrigation
c)
Each year, more freshwater is being trapped in icecaps located at the North and South Poles
d)
Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate

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