Glencoe Earth Science

Chapter 20: Our Impact on Land

Our Impact on Land

1.
Why can't plants used in phytoremediation be used to feed livestock?
A)It costs too much.
B)The plants die too quickly.
C)Livestock often is used to feed humans.
D)It tastes bad and livestock won't eat it.
2.
Which of the following most positively impacts Earth's land and natural resources?
A)using mass transit
B)destruction of rain forests
C)farming
D)feeding livestock
3.
Why is Earth experiencing a population explosion?
A)because the population has always been increasing rapidly
B)because the number of people on Earth is increasing rapidly
C)because some people think Earth's population is too small
D)because the population is maintaining a steady, but slow, increase.
4.
A changing water cycle in tropical areas might be a result of ___________.
A)use of alternative energy resources
B)conservation efforts
C)overflowing garbage dumps
D)cutting down tropical rain forests
5.
Earth has a limited amount of space and resources. You could say that Earth is somewhat like __________.
A)an island
B)a continent
C)a peninsula
D)a mountain
6.
Which of the following has NOT contributed to the increase in Earth's human population?
A)creating landfills
B)better medicine
C)better nutrition
D)clean water
7.
Which of the following is NOT caused by depletion of Earth's forests?
A)increased temperatures on Earth
B)increasing rainfall
C)increased levels of carbon dioxide
D)extinction of species
8.
Which of the following human practices does NOT aid in protecting the environment?
A)retire
B)reuse
C)recycle
D)reduce
9.
One way to prevent liquid wastes from sanitary landfills from draining into the ground water is by __________.
A)allowing only certain items to be dumped
B)spraying them down
C)lining the landfills
D)emptying them out regularly
10.
If an environment exceeds its carrying capacity, what will happen to its resources?
A)They will stay the same.
B)They will increase.
C)They will run out.
D)They will be unaffected.
11.
What process produces pollutants?
A)refining oil
B)harnessing hydropower
C)collecting wind
D)carpooling
12.
What is one thing a company could do to help lessen the impact today's throwaway culture has on the environment?
A)reduce packaging
B)build more plants
C)increase production
D)lower costs
13.
Why is preserving national forestlands, grasslands, and parks important?
A)It will benefit future generations.
B)It will keep land safe so it can be used later.
C)because humans can use it to store wastes
D)because eventually humans will need more forests for lumber
14.
Which is an example of how people can help conserve natural resources in the home?
A)buying products that are packaged
B)composting
C)using fossil fuels
D)disposing of aluminum cans
15.
Which of the following is NOT an effect of paving streets?
A)increased rainfall
B)reduced ground water supplies
C)increased runoff
D)increased stream discharge
16.
The _____________ is the largest number of individuals of a particular species that the environment will support.
A)carrying capacity
B)population
C)society
D)holding point
17.
An example of a fossil fuel is__________.
A)nuclear
B)wind
C)oil
D)hydropower
18.
What kinds of items often are found in a compost pile?
A)plastic
B)metal
C)paper
D)leaves
19.
How does a plant's enzymes help in the reduction of organic pollutants?
A)They can maintain the rate at which the pollutants break down.
B)They can slow down the rate at which the pollutants break down.
C)They can make the pollutants disappear.
D)They can speed the rate at which the pollutants break down.
20.
Organic farming techniques use natural fertilizers, crop rotation, and biological pesticides all in an effort to preserve_________.
A)money
B)species
C)jobs
D)topsoil