What reasons cause the downwelling and upwelling of ocean water?
a. Winds that drive water surplus or deficit
b. Contrasts in water density
c. Tidal effect
d. Both a and b
Answer: d. Both a and b
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If you were designing a rock that resisted weathering, which of the following characteristics would it have?
A) Closely spaced fractures B) A soluble chemical composition C) A quartz-rich rock D) A rock composed of abundant loose pieces E) All of these are correct.
What is included in a quantitative analysis of plankton?
a. An estimation of plankton in a volume of water b. An estimation of salt concentration in the water c. The behavior of plankton d. The amount of sunlight used by plankton
Adrenergic messengers belong to which class of compounds?
A) amides B) amines C) amino acids D) polypeptides
Benthos animals include sponges and corals
a. True b. False Indicate whether the statement is true or false