When high or low tidal currents begin to change direction, it is called:
A) Ebb water
B) Flood water
C) Slack water
D) Stagnant water
C
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Plankton and nekton are different because ____
a. plankton are pelagic b. plankton are benthic c. plankton float d. nekton float e. nekton are benthic
Judge the following sentence according to the criteria given below: The locations of rip currents
typically occur at the same places along a beach BECAUSE their location is controlled by the bottom topography of the shoreline. a. The assertion and the reason are both correct, and the reason is valid. b. The assertion and the reason are both correct, but the reason is invalid. c. The assertion is correct, but the reason is incorrect. d. The assertion is incorrect, but the reason is correct. e. Both the assertion and the reason are incorrect
Speleothems, like trees, have growth rings whose size and property reflect the conditions under which they formed
Indicate whether the statement is true or false
Conditions necessary to turn an ordinary thunderstorm into a tornado-spinning monster include ________.
A. a cold, dry air mass moving down from Canada or out of the Rocky Mountains at > 50 mph B. a low-altitude, northerly flow of warm, humid, tropical air from the Gulf of Mexico and a cold, dry air mass moving down from Canada or out of the Rocky Mountains at > 50 mph only C. jet-stream winds racing east at speeds in excess of 150 mph D. All of these choices are correct. E. a low-altitude, northerly flow of warm, humid, tropical air from the Gulf of Mexico