2. How Do We Impact The Environment? Question Preview (ID: 39709)


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What percentage of the water on Earth is salt water?
a) 70%
b) 3%
c) 97%
d) 99%

What percentage of freshwater is frozen in ice?
a) 1%
b) 2%
c) 3%
d) 4%

True or False: 48% of freshwater is used by the public.
a) True
b) False
c)
d)

True or False: Most of the water pollution in the US comes from non point sources.
a) True
b) False
c)
d)

Which of the following does not impact water quality?
a) Level of oxygen
b) Deforestation
c) Agriculture
d) Waste Management

True or False: Too little oxygen in the water can kill marine life.
a) True
b) False
c)
d)

Nitrates in fertilizer seeping into the water promotes the growth of what type of organism?
a) Fish
b) Shell Fish
c) Algae
d) None of the above

Agal bloom is defined as?
a) Algae population increases at a rapid rate.
b) Algae population decreases at a rapid rate
c) Algae population stays the same
d) None of the above

Increased carbon dioxide levels in the atmosphere means...?
a) Decreased carbon dioxide levels in the ocean
b) Increased carbon dioxide levels in the ocean
c) Carbon dioxide levels will not change in the ocean
d) The ocean will have a lower temperature

How much of our atmosphere is nitrogen gas?
a) 20%
b) 58%
c) 70%
d) 78%

True or False: Scientists estimate that human activities such as manufacturing and applying fertilizers to crops have doubled the amount of nitrogen cycling through ecosystems.
a) True
b) False
c)
d)

The development of desert like conditions due to human activities and/or climate change is known as?
a) Deforestation
b) Desertificiation
c) Reforestation
d) None of the above

What is NOT an effect of mining?
a) Cleaner land
b) Disturbs habitats
c) Changes the landscape
d) Polluted water

The portion of precipitation that moves over land and eventually reaches streams, rivers, lakes and oceans is known as?
a) Mining
b) Water cycle
c) Runoff
d) Agriculture

The development of land for houses and other buildings near a city is called?
a) Desertification
b) Deforestation
c) Reforestation
d) Urban sprawl

Which is NOT an impact of urban sprawl?
a) Habitat destruction
b) Loss of Farmland
c) Increased runoff
d) Decrease of pollutants

Urban sprawl occurred at the same time of what trend?
a)
b) Increased motor vehicle use
c) Decreased motor vehicle use
d) None of the above

How much of the total trash in the US ends up in a landfill?
a) 31%
b) 14%
c) 55%
d) 65%

True or False: Trash containing hazardous waste can be thrown in a landfill because it does not affect the health of humans or other living things.
a) True
b) False
c)
d)

Examples of hazardous waste include all except?
a) Batteries
b) Used motor oil
c) Medical waste
d) All of the above are considered hazardous waste.

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