what is biogeochemical cycle chemical cycle explain the pathaway of carbon dioxide cycle with the help of a labelled diagram
Answers
Biogeochemical cycle : In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. There are biogeochemical cycles for the chemical elements calcium, carbon, hydrogen, mercury, nitrogen, oxygen, phosphorus, selenium, and sulfur; molecular cycles for water and silica; macroscopic cycles such as the rock cycle; as well as human-induced cycles for synthetic compounds such as polychlorinated biphenyl (PCB). In some cycles there are reservoirs where a substance remains for a long period of time (such as an ocean or lake for water).
Carbon cycle : Carbon is an element found in many different forms and locations within our Earth and atmosphere. As previously mentioned, it is found abundantly in living organisms. We would not even exist without this element. The key molecules that make up our bodies, such as proteins, carbohydrates, and DNA, contain carbon as a major component. Carbon is also found abundantly in our atmosphere in the form of carbon dioxide, or CO2. Additionally, carbon is also trapped within the Earth in the form of fossil fuels.
The carbon cycle is essentially nature's way of reusing carbon atoms in different ways and in varying places. It is the process in which carbon travels from the atmosphere into organisms and the Earth and then back into the atmosphere. But, how does this process work, and what moves the carbon?
It is important to remember that our Earth and its atmosphere as a whole is a closed environment. The matter that exists now is all that we will ever have. Have you ever heard the phrase, 'Matter cannot be created nor destroyed?' Think of water, as an example. Water cycles through the Earth and atmosphere constantly. It evaporates from our oceans and other bodies of water and is held within clouds. Then, the water is released in the form of rain. Water is never created or destroyed, just recycled.
Similarly, we have a fixed amount of carbon on Earth and in the atmosphere. We are in our own bubble, with essentially nothing escaping or entering our world. We are not getting intergalactic deliveries of needed elements like carbon. That means that all of the carbon we have on Earth and in the atmosphere is the same amount we have always had. And so, when new organisms are being formed, carbon is needed to form those key molecules, such as protein and DNA. But, where does it come from? This is where the carbon cycle comes in.
Diagram is in the attachment :
A biogeochemical cycle is one of several natural cycles, in which conserved matter moves through the biotic and abiotic parts of an ecosystem. ... Each of these elements is circulated through the biotic components, which are the living parts of an ecosystem, and the abiotic components, which are the non-living parts.
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