The bleaching of a coral reef may be due to
A) exposure to chemicals.
B) human activities.
C) temperature changes.
D) all of these
Correct Answer:
Verified
Q14: Sublimation refers to the process of converting
Q15: Approximately _ percent of the Earth's water
Q16: Coral reefs consist of _ polyps, which
Q17: The largest reservoir of carbon is
A) living
Q18: Carbon primarily cycles between
A) animals and plants.
B)
Q20: Commercial fertilizers often add _ to the
Q21: Which form(s) of nitrogen is(are) unusable by
Q22: A _ is a region where all
Q23: Heat from the sun allows water to
Q24: Polar bears are classified as a threatened
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