Q:

What is the definition of "carbon dioxide-oxygen cycle"?

A:

Quick Answer

According to Locust Valley Central School District, the carbon dioxide-oxygen cycle is the process through which carbon dioxide and oxygen move through the natural environment by photosynthesis, respiration, combustion and decomposition. Plants and animals are important to the carbon dioxide-oxygen cycle.

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Full Answer

During photosynthesis, plants absorb carbon dioxide through openings in their leaves. In the chlorophyll or green pigment in the leaves, the carbon dioxide, along with water and sunlight, is converted to sugar, used for energy in the plant, and oxygen and water vapor, which are released into the air. During respiration, animals breathe in the oxygen in the atmosphere and use it along with food to create energy. This process releases carbon dioxide which animals release into the air. Combustion is any source of burning, such as fires, volcanoes and using fossil fuels for energy, which also releases carbon dioxide into the air. Decomposition is when dead plants and animals breakdown. This returns the carbon dioxide and oxygen from the plant or the animal's body back to the environment.

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Related Questions

  • Q:

    What process in your body produces carbon dioxide?

    A:

    The process in the body that produces carbon dioxide consists of air being taken into the lungs, known as inspiration or inhalation. The air is then taken back out, known as expiration or exhalation.

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  • Q:

    Why is carbon dioxide important?

    A:

    Carbon dioxide is important because it is used in photosynthesis, a process that is necessary for the survival of life on Earth. Carbon dioxide is also a vital greenhouse gas that helps trap heat in the atmosphere, and it plays a key role in Earth's carbon cycle.

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  • Q:

    Why do people breathe out carbon dioxide?

    A:

    People and animals breathe in oxygen and breathe out carbon dioxide because of a process called cellular respiration. During cellular respiration, oxygen is combined with food nutrients and water in order to produce usable energy in the form of adenosine tri-phosphate (ATP). The byproduct of this process is carbon dioxide, which is removed from the body through breathing.

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  • Q:

    Who discovered carbon dioxide?

    A:

    Scottish physician and chemist Joseph Black discovered carbon dioxide on June 11, 1754. He noticed that heating calcium carbonate produced a gas much heavier than air. He also noted that it could put out fire. He called the gas "fixed air."

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