Muscle contraction occurs when the brain tells the body to move. The brain ... Muscle cramps are primarily caused by a lack of ATP in the body. ... The function of potassium inside the muscle cell is to repolarize the membrane.
DNA is the correct answer.
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A phase change is when matter changes into another form but keeps its properties
Answer:
Photosynthesis
Explanation:
This is a role in the cycling of matter and flow of energy into and out of organisms. The flow of energy and cycling of matter can be traced.