Organisms that feed on both plants and animals are called
A) autotrophs.
B) omnivores.
C) carnivores.
D) herbivores.
E) decomposers.
Correct Answer:
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Q20: Carbon, hydrogen, oxygen, and nitrogen make up
Q21: In open water, the dominant producers are
A)trees.
B)ferns.
C)fish.
D)grasses.
E)phytoplankton.
Q22: Photosynthesis
A)converts glucose into energy and water.
B)requires the
Q23: Sedimentary rocks are formed from
A)volcanic eruptions.
B)small pieces
Q24: The portion of the earth that contains
Q26: Which process decreases the amount of carbon
Q27: In food chains, energy moves from one
Q28: The two ways in which humans have
Q29: Time delays can allow an environmental problem
Q30: The water cycle, hydrogen cycle, phosphorus cycle,
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