Answer:
co2
Explanation:
Hope this helps, have a nice day!
I believe the answer is Frictional Force
Secondary consumer is the answer.
Reservoir is the answer to your question.
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Food is the most important source of chemical energy for living things. The chemical energy in food is converted, or changed, by the body into moving mechanical energy and heat energy. People have invented ways to use the chemical energy of substances to power machines.
