Respiration occurs in this polar bear and in all other animals too.
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Respiration is the name of the general process where organisms
convert sugars and oxygen into biochemical energy. The process happens
in all organisms
, including animals, plants, fungi, and bacteria. During respiration, energy is created to fuel
the different processes necessary to support life.
In addition to making useful energy, respiration makes carbon
dioxide and water as waste products.
The reverse of respiration is known
as photosynthesis. During photosynthesis, energy from the Sun's rays is
used by an
autotroph's cell to produce carbohydrates, with oxygen made as a byproduct.
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