Producers take up ____ from the atmosphere and incorporate it into their tissues through the process of ____.
A) carbon dioxide; decomposition
B) carbon dioxide; cellular respiration
C) carbon dioxide; photosynthesis
D) oxygen; photosynthesis
E) oxygen; cellular respiration
Correct Answer:
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Q18: In ecosystems, primary consumers are _.
A)herbivores
B)carnivores
C)scavengers
D)decomposers
E)detritivores
Q19: How does phosphorus enter the biological portion
Q20: By the process called _, an organism's
Q21: Which gas is increasing the most in
Q22: Primary production is the _.
A)rate of photosynthesis
B)rate
Q24: Producers are present at which trophic level?
A)first
B)second
C)third
D)fourth
Q25: The bottom or base of an energy
Q26: Detritus specifically includes _.
A)exclusively organic wastes
B)exclusively toxic
Q27: Most of the energy within an ecosystem
Q28: Burning of fossil fuels, use of synthetic
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