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Author Question: In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessar (Read 716 times)

Jesse_J

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on: Jun 13, 2013
In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?
A) autotrophs and heterotrophs
B) producers and primary consumers
C) photosynthesizers
D) autotrophs
E) green plants


aero

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Reply #1 on: Jun 15, 2013
I picked D and I got it right, good luck :)


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Jesse_J

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Reply #2 on: Jun 22, 2013
You were right :D


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