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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
carbon
B
helium
C
hydrogen
D
nitrogen
2) A polluntant released into the atmosphere is
A
photochemical smog
B
acid precipitation
C
an emission
D
a nodule
3) Releasing nitrogen from the soil back into the atmosphere is called
A
photosynthesis
B
cellular respiration
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 consumer
B
a decomposer
C
an emission
D
a legume
6) The process by which an organism's body releases energy from carbon-based molecules is called
A
denitrification
B
nitrogen fixation
C
cellular respiration
D
photosynthesis
7) Which process describes how plants make sugar from sunlight, water, and carbon dioxide?
A
photosynthesis
B
cellular respiration
C
denitrification
D
nitrogen fixation
8) Air pollution can be caused by burning too many
A
nodules
B
emissions
C
legumes
D
fossil fuels
9) When precipitation gathers into a body of water, it is called
A
acid precipitation
B
photochemical smog
C
runoff
D
collection
10) The precipitation that flows over the surface of soil is
A
smog
B
runoff
C
collection
D
acid precipitation
*select an answer for all questions
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