Hydrogen and oxygen cells combine explosively combine.-answers.com
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Answer:
animals get energy indirectly from the sun
Explanation:
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An enzyme lowers the activation energy of a reaction so it can take place within living organism, so an enzyme is a biological catalyst.
Heat is generated by friction is one of the ways and fuel and air if making flames
Answer:
Explanation:
Cellular respiration -
Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water.