AP BIOLOGY

ECOLOGY

CHEMICAL CYCLES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The major reservoir or “sink” for carbon is
A
CO2 in the atmosphere
B
Granite bedrock
C
The deep ocean sediment and limestone rock made of calcium carbonate.
D
Aerobic and anaerobic bacteria.
Explanation: 

Detailed explanation-1: -The largest reservoir of the Earth’s carbon is located in the deep-ocean, with 37, 000 billion tons of carbon stored, whereas approximately 65, 500 billion tons are found in the globe. Carbon flows between each reservoir via the carbon cycle, which has slow and fast components.

Detailed explanation-2: -On Earth, most carbon is stored in rocks and sediments, while the rest is located in the ocean, atmosphere, and in living organisms. These are the reservoirs, or sinks, through which carbon cycles.

Detailed explanation-3: -Carbon is a major component of all life, and in the form of the greenhouse gas carbon dioxide, it helps to maintain a habitable range in temperatures. Carbon moves through all the Earth’s reservoirs. Most of it is contained in sedimentary rocks: coal, chalk, lime-stone, and shale.

Detailed explanation-4: -The primary reservoirs of carbon dioxide are the oceans, the terrestrial surface (primarily in plants and soil), and geological reserves of fossil fuels.

There is 1 question to complete.