Question

Explain oxygen cycle in nature and carbon cycle in nature

Answer 1

CARBON CYCLE : Carbon is also present in air as CO2, and in oceans as carbonates and bicarbonates, that also dissolve to generate CO2. Carbon is also present in soil (lithosphere) as fossil fuels. The primary source of removal of carbon from the atmosphere is when CO2 is absorbed by plants during photosynthesis. The restock is done through respiration, combustion of fossil fuels, decomposition and chemical reactions that give out CO2.

OXYGEN CYCLE : oxygen is one of the most abundant elements on earth. About 21% of our air is composed of oxygen. It is also an atom in the molecule of water (H2O). Oxide compounds, such as CO2 also contain oxygen. oxygen is absolutely essential for all living organisms to survive. It is the main component in respiration. It is also the element that allows and assists combustion of any kind. Through photosynthesis, the replenishment of oxygen in the atmosphere is done, where oxygen is one of the by-products. In fact, photosynthesis and respiration are interdependent mechanisms that perform a unique and amazing balancing.

Answer 2

oxygen cycle
Oxygen cycle, circulation of oxygen in various forms through nature. Free in the air and dissolved in water, oxygenis second only to nitrogen in abundance among uncombined elements in the atmosphere. Plants and animals use oxygen to respire and return it to the air and water as carbon dioxide (CO2).

carbon dioxide cycle

In the atmosphere, carbon is attached to some oxygen in a gas called carbon dioxide. Plants use carbon dioxide and sunlight to make their own food and grow. The carbon becomes part of the plant. Plants that die and are buried may turn into fossil fuels made ofcarbon like coal and oil over millions of years.



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