Coral bleaching occurs when
a. corals reproduce.
b. fish move into coral reefs.
c. zooxanthellae (algae) leave the coral.
d. coral reefs expand their range.
Answer: C
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Which of the following statements explains why air molecules selectively scatter visible light?
A. Air molecules are much larger than the wavelength of visible light. B. Air molecules are smaller than the wavelength of visible light. C. The electrons that orbit around the nucleus of atoms have a blue colour. D. Air molecules are the same size as the wavelength of visible light.
Sedimentary iron ores that are layered are called
A. banded hematite quartzite. B. banded iron formation. C. banded iron quartzite. D. banded metallic formation.
A meander cutoff filled with water forms a(n) ____________________
Fill in the blank(s) with correct word
The duration of shaking in 1985 in Mexico City was decreased due to seismic energy being trapped within the soft sediments.
Answer the following statement true (T) or false (F)