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