In an ecosystem, phytoplankton are _____.

a. primary consumers
b. tertiary consumers
c. producers
d. detritivores
e. secondary consumers


Answer: c. producers

Environmental & Atmospheric Sciences

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Which of the following is NOT a stated co-benefit of reducing greenhouse gas emissions?

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One of the discoveries which led to the modern view of the solar system was that the orbits of the planets are ________

A) parabolas B) hyperbolas C) ellipses D) circles

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The process by which toxic substances can be concentrated in the flesh of organisms at higher trophic levels is called ____

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Which section of the Emergency Response Guidebook (ERG) provides information on isolation and evacuation distances for specific chemicals?

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