Indiana Science Grade 8

Chapter 20: Our Impact on Land

Section 2 Self-Check Quiz-Eng.

1.
Which of the following is a result of today's throwaway lifestyle?
A)traffic-choked highways
B)overflowing garbage dumps
C)shrinking forests
D)overflowing wildlife
2.
Organic farming techniques use natural fertilizers, crop rotation, and biological pesticides all in an effort to preserve_________.
A)topsoil
B)species
C)money
D)jobs
3.
What prevents soil from being carried away through erosion?
A)walls
B)plant roots
C)rocks
D)cement
4.
Which of the following most positively impacts Earth's land and natural resources?
A)feeding livestock
B)farming
C)destruction of rain forests
D)using mass transit
5.
Which of the following is NOT caused by depletion of Earth's forests?
A)extinction of species
B)increased levels of carbon dioxide
C)increased temperatures on Earth
D)increasing rainfall
6.
A changing water cycle in tropical areas might be a result of ___________.
A)cutting down tropical rain forests
B)conservation efforts
C)use of alternative energy resources
D)overflowing garbage dumps
7.
Which of the following is NOT an effect of paving streets?
A)increased runoff
B)increased stream discharge
C)increased rainfall
D)reduced ground water supplies
8.
Phyto in phytoremediation means ___________.
A)animal
B)plant
C)life
D)light
9.
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.
10.
The loss of Earth's rain forests could result in __________.
A)increased O2 levels
B)decreased CO2 levels
C)increased rainfall
D)species extinction
11.
One way to prevent liquid wastes from sanitary landfills from draining into the ground water is by __________.
A)emptying them out regularly
B)allowing only certain items to be dumped
C)lining the landfills
D)spraying them down
12.
Why can't plants used in phytoremediation be used to feed livestock?
A)Livestock often is used to feed humans.
B)It tastes bad and livestock won't eat it.
C)The plants die too quickly.
D)It costs too much.
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