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Chapter 2.3
Test Description: Cycles in the Biosphere
Instructions: Answer all questions to get your test result.
1) The law of conservation states that:
A
matter can never be replenished
B
matter is not created or destroyed
C
matter fluctuates from year to year
D
matter doesn't matter
2) How do nutrients cycle through the biosphere?
A
through plants
B
through organisms
C
through producers
D
through consumers
3) A chemical substance that an organism needs to perform life processes is called?
A
nitrogen
B
oxygen
C
a nutrient
D
matter
4) The combination of processes that exchange matter through the biosphere is called?
A
the biogeochemical cycle
B
the life cycle
C
the nitrogen cycle
D
the water cycle
5) Which statement is not a step in the water cycle?
A
precipitation
B
evaporation
C
weathering
D
transpiration
6) Autotrophs and heterotrophs release carbon dioxide into the air during:
A
denitrification
B
the phosphorus cycle
C
photosynthesis
D
cellular respiration
7) Nitrogen is returned to the soil when-
A
animals urinate and organisms die
B
plants grow
C
humans pollute the ground
D
contaminates seep into the ground
8) Growth of producers is limited by-
A
the amount of animal waste
B
the amount of phosphorus available to them
C
the amount of nitrogen compounds available
D
the amount of consumers available
9) Who begins the nutrient cycle through the biosphere?
A
consumers
B
autotrophs
C
producers
D
heterotrophs
10) At each step in the food web, organisms reuse __________ to make proteins.
A
oxygen
B
nitrogen
C
carbon dioxide
D
dioxide
*select an answer for all questions
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