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