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Ecosystems And Human Impact
Test Description: Review questions!
Instructions: Answer all questions to get your test result.
1) What is the ozone layer?
A
thin layer in the upper atmosphere that protects Earth from supersonic rays
B
thin layer in the lower atmosphere that protect Earth from ultraviolet rays.
C
thin layer in the upper atmosphere that protects Earth from ultraviolet rays.
D
thin layer in the lower atmosphere that protects Earth from supersonic rays
2) Which gas is a greenhouse gas?
A
oxygen
B
nitrogen
C
sulfur dioxide
D
carbon dioxide
3) What happens with insecticides and herbicides that we put on our lawns?
A
They end up dissolving into the lawns.
B
They end up evaporating
C
They end up in bodies of water and nourish animal and plant life.
D
They end up in bodies of water killing animals and plant life.
4) How many times in the history of Earth has the number of species dropped drastically?
A
six times
B
five times
C
four times
D
three times
5) What are sudden large declines in biodiversity in the fossil record called?
A
mass extinction
B
mass evolution
C
mass decline
D
mass increase
6) Where is permafrost located in tundra?
A
in the atmosphere
B
in the flora
C
under the surface of the earth
D
surface of the earth
7) Which of the following items would be an ecosystem within the ocean ecosystem?
A
ponds
B
marshes
C
rivers
D
coral reef
8) Which of the following are part of the ocean's ecosystems?
A
intertidal zones, deep sea vents and lakes
B
intertidal zones, estuaries and lakes
C
intertidal zones, deep sea vents and salt marshes
D
intertidal zones, estuaries and ponds
9) What is an important freshwater ecosystem with a high biodiversity that is also declining in numbers?
A
tides
B
estuaries
C
reefs
D
wetlands
10) What did scientists believe was the cause of the hole in the ozone layer?
A
cars
B
aerosol sprays
C
acid rain
D
pump spray bottles
*select an answer for all questions
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