The rising concentration of carbon dioxide in the atmosphere threatens corals because it lowers ocean pH and decreases the availability of carbonate ions.
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Q16: Seaweeds are _.
A)vascular plants
B)unicellular algae
C)muticellular algae
D)phytoplankton
Q19: Nutrients in coral reefs are _.
A)extremely limited,
Q21: The root-shaped jumble at the base of
Q22: Which list provides the stages of evolution
Q23: Hermatypic corals live in warm, well-lit water.
Q24: Coral reefs are typically home to _.
A)a
Q26: Mangrove trees have distinctive roots that trap
Q31: An individual coral animal is called a
Q39: Benthic organisms live .
A) on or associated
Q55: Hydrothermal vents that support biological communities exist
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