In open-water marine ecosystems, the ________ occupy the same trophic level as the giant sequoias (redwoods) in the forests of California.
A) fast-swimming, fish-eating tuna
B) giant, squid-eating whales
C) microscopic bacteria that decompose all the other organisms once they have died
D) microscopic, single-celled algae (protists) called phytoplankton ("plant-like drifters")
E) tiny, multicellular zooplankton ("animal drifters") that feed on phytoplankton
Correct Answer:
Verified
Q27: Which trophic level has the least bioaccumulation?
A)heterotrophs
B)primary
Q28: Which nutrient cycle lacks an atmospheric reservoir?
A)nitrogen
B)oxygen
C)water
D)carbon
E)phosphorus
Q29: Carnivores are usually:
A)secondary consumers.
B)primary consumers.
C)autotrophs.
D)detritus consumers.
E)consumer producers.
Q30: Net primary production is:
A)energy that photosynthetic organisms
Q31: Certain bacteria and fungi that are important
Q33: _ is/are a crucial nutrient reservoir of
Q34: Bacteria that live in deep-sea thermal vents
Q35: In a grassland of Kansas, 1,000 grams
Q36: Oceans, the atmosphere, and fossil fuels are
Q37: The community of heterotrophic protists and invertebrate
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