explain oxygen and carbon dioxide cycle in atmosphere
Answers
Plants use carbon dioxide in a process known as photosynthesis. During photosynthesis, plants give off oxygen as a waste product. Carbon dioxide moves from the air into the leaves of plants through tiny openings in the plant’s leaves. Oxygen moves out of the plant leaf through these same openings.
All animals, including humans, require oxygen to survive. Animals breathe in the oxygen made by plants and breathe out carbon dioxide as a waste product. Even animals that live underwater need oxygen. These animals pass water over their gills to take in dissolved oxygen that is made by water plants. The water plants in turn take in the dissolved carbon dioxide from the water.
Animals and plants are connected to each other by the oxygen-carbon dioxide cycle. Plants need the carbon dioxide from animals to live and animals must have the oxygen from plants to survive.
Answer:
Two elements, carbon and oxygen, are necessary for life. They exist in the environment naturally as atmospheric oxygen and carbon dioxide. Living things are continually being replaced because they are constantly moving between the soil, the air, and the water.
Explanation:
Green plants use atmospheric carbon dioxide to create living matter and release oxygen into the air when they are exposed to light. Photosynthesis is the name of this process. During respiration, both animals and plants use oxygen to make carbon dioxide, which is eventually emitted into the environment.
The carbon fixed in life forms is also released into the environment as atmospheric co2 when biomass is exposed to decomposition or burning.
Photosynthesis and the breakdown of the gas in the oceans serve to offset the emission of carbon into the atmosphere. But because of human activity, this equilibrium is being upset to the point where carbon tends to build high in the atmosphere.
As a result of photosynthesis, plants release oxygen. Through minuscule apertures in the plant's leaves, carbon dioxide diffuses from the atmosphere into the leaves. These similar holes allow oxygen to exit the plant leaf.
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