Oxygen enters seawater ____
A) through the respiration of animals
B) as a byproduct of photosynthesis and diffusion from the atmosphere
C) as a result of decomposition of plant and animal remains
D) through the oxidation of metal ions in seawater
B
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What characteristics indicate whether a rock is an intrusive or extrusive igneous rock?
What will be an ideal response?
Nitrogen dioxide (NO2 ) reacts with ____ in the atmosphere to form nitric acid (HNO3 )
A) hydrogen B) water vapor C) ozone D) carbon dioxide
The Antarctic circulation is dominated by what single large current?
a) The Antarctic surface water current b) The Antarctic circumpolar current (West Wind Drift) c) East Wind Drift d) Antarctic Bottom Water e) North Atlantic Deep Water
The unusual composition of the atmosphere is due to _______.
Fill in the blank(s) with the appropriate word(s).