1. Growth
2. Tumor
3. Body
ATP is required for muscle contraction. Four sources of this substance are available to muscle fibers: free ATP, phosphocreatine, glycolysis and cellular respiration. A small amount of free ATP is available in the muscle for immediate use.
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Answer:
A tree absorbs carbon during photosynthesis and stores it in the wood for the life of the tree.
Explanation:
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