Answer:
The immune, lymphatic, and circulatory systems work together in protecting the body.
Answer:
When the muscle starts to contract and needs energy, creatine phosphate transfers its phosphate back to ADP to form ATP and creatine. This reaction is catalyzed by the enzyme creatine kinase and occurs very quickly; thus, creatine phosphate-derived ATP powers the first few seconds of muscle contraction.
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The pyramid is not shaped like a typical pyramid, because the bottom should be bigger and getting smaller on top.
