differentiate carbon and oxygen cycle.
Answers
Answer:
Oxygen is needed for respiration, and carbon dioxide is emitted in the process. This inhaled oxygen is needed to produce energy (ATP) inside living cells from the process known as cellular respiration. On the other hand, carbon dioxide is utilized by plants for photosynthesis to produce carbohydrates.
Explanation:
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Answer:
The Oxygen Cycle:
Photosynthesis is the driver of the oxygen cycle. In this process, plants transform CO2 and water into sugars to use in their metabolism, help them to grow and to provide food for other organisms. The atmosphere, the total content of biological matter on the planet and the Earth’s crust are the three main reservoirs of oxygen. About 20% of the Earth’s atmosphere is composed of molecular oxygen. Some atmospheric oxygen is in the form of ozone (CO3) which makes up the ozone layer and absorbs much of the sun’s ultraviolet radiation, protecting the planet surface. Scientists think that early in the Earth’s history, oxygen was first released into the atmosphere by the action of ultraviolet light on water vapor.
The Carbon Cycle:
Life on Earth is based on carbon. The carbon reservoirs are the atmosphere, the biosphere, the oceans, sediments (including fossil fuels) and the mantle and crust of the planet. Carbon dioxide and methane are the two principal forms of carbon in the atmosphere. Plants take in CO2 and water to create sugars like glucose through the process of photosynthesis. The plants then release oxygen and water vapor as byproducts. The oxygen goes back into the oxygen cycle and the water vapor enters the water cycle. Without plants, CO2 would build up to dangerous levels in the atmosphere and add to the greenhouse effect. About 500 gigatons of carbon are stored in the plants and animals that live on the surface of the planet and the soil holds about 1,500 gigatons.
Like the carbon that is used during photosynthesis, the carbon in the oceans, sediments, mantle and crust of the planet has been moving through the carbon cycle for hundreds of millions of years. Carbon can be cycled through the various processes over the course of days, weeks, months or years. It can take tens of millions of years for carbon stored in the ocean floor to be released, if it is ever released at all. Volcanic eruptions are one way that carbon-containing molecules from deep within the planet are released to the surface. The combination of burning fossil fuels (releasing CO2) and deforestation (reducing photosynthesis and carbon storage) caused by humans is disrupting the carbon cycle in a negative way.
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