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Natural Cycles Review
Test Description: Science Natural Cycles
Instructions: Answer all questions to get your test result.
1) Which of the following is not one of the elements most abundant in living things?
A
helium
B
nitrogen
C
hydrogen
D
carbon
2) A polluntant released into the atmosphere is
A
acid precipitation
B
an emission
C
a nodule
D
photochemical smog
3) Releasing nitrogen from the soil back into the atmosphere is called
A
cellular respiration
B
photosynthesis
C
nitrogen fixation
D
denitrification
4) Converting nitrogen in the atmosphere into a form that can be used by plants is called
A
photosynthesis
B
cellular respiration
C
denitrification
D
nitrogen fixation
5) Which of the following hosts nitrogen-fixing bacteria in nodules on its roots?
A
a legume
B
an emission
C
a decomposer
D
a consumer
6) The process by which an organism's body releases energy from carbon-based molecules is called
A
photosynthesis
B
nitrogen fixation
C
denitrification
D
cellular respiration
7) Which process describes how plants make sugar from sunlight, water, and carbon dioxide?
A
cellular respiration
B
photosynthesis
C
nitrogen fixation
D
denitrification
8) Air pollution can be caused by burning too many
A
emissions
B
nodules
C
fossil fuels
D
legumes
9) When precipitation gathers into a body of water, it is called
A
collection
B
acid precipitation
C
photochemical smog
D
runoff
10) The precipitation that flows over the surface of soil is
A
acid precipitation
B
smog
C
runoff
D
collection
*select an answer for all questions
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