The balance between photosynthesis and respiration in the open ocean's water column ________.
A. changes with depth
B. is affected by light availability
C. favors photosynthesis for most of the euphotic zone
D. All of these are correct.
E. None of these is correct.
Answer: D
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Any open container having a consistent cross-sectional area throughout can be used as a ________.
Fill in the blank(s) with correct word
What part of the Earth does not have glaciers or ice sheets today?
A) Tropics. B) Midlatitudes. C) Polar areas. D) Tropics and midlatitudes. E) All of these areas have glaciers or ice sheets today.
The percentage of the Earth's surface that is covered by water is about:a
10%. b. 30%. c. 50%. d. 70%. e. 100%.
A primary difference between the concepts of weather and climate is the:
A) temperature scale used. B) time period involved. C) type of weather elements measured. D) measuring technique used.