Why are nutrient cycles in nature called biogeochemical cycles?
The Earth is defined as the closed system that matters, In the earth's atmosphere small amounts of cosmic debris entering the Earth’s atmosphere are the only exception.
The structure and chemical processes of life come from the elements that are needed and they are present in the Earth’s crust, their formation was done billions of years ago.
The continuity process of the different cycles that are considered as the building blocks of life through Earth’s systems, which include the atmosphere, hydrosphere, biosphere, and lithosphere, on time scales that will start from a few days to millions of years.
These cycles are known as biogeochemical cycles because they include a variety of biological, geological, and chemical processes.
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