How is the ocean a reservoir for carbon? How is the carbon dioxide able to re-enter oceanic and atmospheric cycles?
· The ocean acts as a reservoir for carbon dioxide because it is able to store large amounts of it. There is a high theoretical maximum for carbon dioxide which is not reached in the ocean. There is 60 times the amount of carbon dioxide in the ocean than there is in the atmosphere.
· Carbon dioxide is highly soluble in water. It can move from the atmosphere to the ocean quite quickly, but is slower in moving from the ocean to the atmosphere.
· Marine photosynthesis can quickly use carbon dioxide that enters the water.
· Carbon dioxide can re-enter ocean and atmosphere cycles via a few processes. Sediments can dissolve back into the water. This can happen because of the pH levels in an area. Geological uplift can expose carbonate rocks to oxygen reactions above water. These reactions can release the carbon dioxide back into the atmosphere. Acid rain achieves the same result when hitting limestone sediments.
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Why might coating a metal with another metal that is harder to oxidize prevent the first metal from being oxidized?
A. All of the oxidizing agent is consumed using up the easily oxidized metal. B. It doesn't prevent it, but helps to slow it down. C. The metal that is coated is protected from moisture and oxygen so it doesn't react. D. The metal that is acting as the coating is protected from moisture and oxygen. E. all of the above
The organelles that function as a cell's "garbage disposals," breaking down organic materials, are
A. Golgi apparatuses. B. ribosomes. C. lysosomes. D. mitochondria.
Recycling paper and buying recycled paper products is one way you can help to sustain terrestrial biodiversity
Indicate whether the statement is true or false
When it is summer in the Northern Hemisphere, Earth is tilted
A) so that the North Pole tilts toward the Sun. B) so that the North Pole tilts away from the Sun. C) so that the South Pole tilts toward the Sun. D) so that the North Pole and South Pole are equidistant from the Sun.