Complex arrangements of feeding patterns in ecosystems are best described as
A) food webs
B) food chains
C) trophic levels
D) pyramids of energy
E) trophic chains
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Q42: Nitrogen is a major component of all
Q43: The portion of the planet that is
Q44: Which of the following biogeochemical cycles does
Q45: With regards to productivity of an ecosystem,
Q46: Nitrogen fixation is accomplished by
A) Legumes
B) Bacteria
C)
Q48: The most common gas in the atmosphere
Q49: Net primary productivity
A) is the rate at
Q50: Over land, about what percent of the
Q51: The hydrologic cycle is driven primarily by
A)
Q52: The hydrologic cycle refers to the movement
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