Diatoms are characterized by ____,and are the source of economically useful_____.
A) calcium carbonate shells; ozone
B) calcium carbonate sheaths; petroleum
C) silica shells; diatomaceous earth
D) silica sheaths; limestone
E) silica carbonate shells; diatomaceous earth
Correct Answer:
Verified
Q33: Anaerobic methanogens produce _.
A) carbon monoxide
B) carbon
Q45: Red algae _.
A) are primarily marine organisms
B)
Q48: The _ of flagellated protozoans are analogous
Q51: Some bacteria in the deep oceans use
Q59: Dinoflagellates typically have _; some photosynthetic species
Q60: You boil water that has been extracted
Q63: The _ protists may cause dysentery after
Q65: Match the following terms with the description
Q70: Match the following terms with the description
Q74: Match the following terms with the description
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