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Carbon Cycle Review
Test Description: Pre-Quiz Review questions
Instructions: Answer all questions to get your test result.
1) Only humans can remove carbon from this carbon sink/reservoir.
A
plants
B
fossil fuels
C
atmosphere
D
animals
2) Animals and plants return CO2 to the atmosphere by “breathing” in a process called
A
photosynthesis
B
respiration
C
combustion
D
decomposition
3) One of the main ways CO2 is removed from the atmosphere is
A
photosynthesis
B
decomposition
C
combustion
D
respiration
4) Organisms at the _____ of an energy pyramid have the _______ amount of energy available to them compared to organisms at other levels.
A
bottom; least
B
top; most
C
middle; most
D
top; least
5) Processes that release CO2 to the atmosphere are known as carbon ________
A
sinks
B
reservoirs
C
sources
D
footprints
6) When humans burn fossil fuels, most of the carbon quickly enters the ________ as carbon dioxide.
A
air
B
atmosphere
C
sun
D
water
7) Which one of these does not add CO2 to the atmosphere?
A
cooking with charcoal
B
burning forrests
C
riding a bus
D
planting trees
8) Which process does not produce carbon dioxide?
A
Respiration
B
Combustion
C
Photosynthesis
D
Decomposition
9) How does the carbon in grass become part of a lion?
A
Carbon from grass doesn't end up in a lion.
B
The lion breathes in carbon given out by the plant
C
The lion eats the grass
D
The lions eats animals that consume carbon from plants.
10) Which of the following removes carbon from the atmosphere?
A
combustion
B
respiration
C
photosynthesis
D
decomposition
11) If the plant population decreased, the amount of carbon would _________.
A
Descrease
B
idk
C
Increase
D
Stay the same
12) Which of the following is a true statement?
A
Plants produce carbon dioxide
B
Humans depend on carbon dioxide, plants depend on oxygen
C
Humans depend on oxygen, plants depend on carbon dioxide
D
Humans don't depend on plants for the air they need
13) Which of the following is an example of a decomposer?
A
fish
B
tree
C
mushroom
D
owl
14) Organisms that do not decompose can be buried and become what?
A
fossil fuels
B
oxygen
C
air
D
water
15) Carbon is a reactant in respiration in the form of?
A
glucose
B
water
C
ATP
D
oxygen
*select an answer for all questions
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