Which organisms burrow into the deep-ocean muds in a process called bioturbation?
A) Starfish
B) Sponges
C) Sea cucumbers
D) Clams
E) Sea urchins
Correct Answer:
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Q21: Coral bleaching results in
A) the expulsion of
Q22: Animals and algae living attached to the
Q23: Intertidal zonation on a rocky beach is
Q24: The first trophic level in a hydrothermal
Q25: Water must be warmer than _ to
Q27: Coral reefs are formed by
A) coral polyps
Q28: The benthic zone is considered the seafloor
Q29: Blades are the photosynthetic organ of seaweed.
Q30: An individual coral animal is known as
Q31: Zooxanthellae are
A) dinoflagellates living in tropical corals.
B)
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