percentage contributions to the greenhouse effect 70- 60- 50 40- percen ge 30- 20 10- 0+ CO2 methane CFCS N20 gases number of years gases remain in the atmosphere N,0
Nutrient Cycle
The chemical nutrients that are essential for the synthesis of living matter are taken from the physical environment. After the death and decomposition of living organisms, they are returned to the environment to be used over and again. This cyclic back and forth regenerative movement of chemical elements between organisms and their physical environment is known as the biogeochemical cycle or nutrient cycle. Since these elements serve as the essential chemical nutrients of organisms, their cyclic movements are also called nutrient cycling or mineral cycling. Minerals are not uniformly distributed all over the ecosystems but are more concentrated in specific compartments, called pools. The major biogeochemical cycles include the water cycle, nitrogen cycle, carbon cycle, phosphorus cycle, calcium cycle, sulfur cycle, etc.
Biosphere
The geologist Eduard Sues coined the term biosphere. The biosphere is characterized as a part of the earth, which includes ground and air. Moreover, the organisms on earth live in the biosphere. The biosphere is a confined area on the earth's surface where water, soil, and air combine to promote life. Several different types of life exist here.
![percentage contributions to the greenhouse effect
70
60
50-
40
percen ge
30-
20
10-
0-
CO2
methane
CFCS
N20
gases
number of years gases remain in the atmosphere
N,0
CFCS
gases
methane
CO,
100 200 300 400 500 600 700 800 900 1000 1100
years
() According to this data, how many times longer do CFCS
remain in the atmosphere than CO2?
(i) (1) Use values from these graphs to explain why CO2 is
considered to be the main greenhouse gas;
[2]
(2) the importance of CFCS to the greenhouse effect
might be greater than their percentage contribution
would suggest.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc7466815-dba6-43b9-8865-4aaa5b19ea96%2F7470cabb-9969-46a1-b333-5167b6d9c2f4%2Fms88yju_processed.jpeg&w=3840&q=75)
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