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172. The Carbon And Oxygen Cycles
Test Description: ScienceStudyGames.com
Instructions: Answer all questions to get your test result.
1) Carbon and Oxygen are elements and are_____________to life
A
helpful
B
essential
C
hurtful
2) Oxygen lives in the atmosphere as a __________.
A
liquid
B
solid
C
cloud
D
gas
3) Carbon and Oxygen are constantly being recirculated between air, water, and _______________.
A
soil
B
liquids
C
plants
D
animals
4) Atmospheric oxygen comes mostly from _____________.
A
oceans
B
green plants
C
soil
D
air
5) During the process, ___________________, plants use carbon dioxide from the air and turn it into oxygen.
A
photosynthesis
B
mitosis
C
cellular respiration
D
fixing
6) Carbon dioxide is produced through the ________________of animals.
A
respirations
B
bonding
C
cloning
D
reproduction
7) The process of living things decomposition releases ___________back into the air, or atmosphere.
A
nitrogen
B
liquids
C
oxygen
D
carbon dioxide
8) Humans are disrupting the processes of nature. We are releasing too much carbon into the _____________.
A
atmosphere
B
oceans
C
soil
9) Plants and animals work ______________to balance the oxygen and carbon cycles.
A
with the soil
B
independently
C
in tandem
10) We, humans, are stressing the processes of nature, and therefore our future, when we cut down too many trees to build cities or housing.
A
False
B
True
*select an answer for all questions
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