Is the EPIDERMIS.it has four layers of skin, the stratum which contains blood vessels and nerves
Observation designed to minimize the effects of variables other than the independent variable.
Answer:
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Explanation:
All of the body processes, like digestion, pumping blood, breathing, are powered by cells converting the stored chemical energy into work and heat, in a process called respiration. ... Inside the muscle cells of the human (or any animal), the chemical energy is transformed (changed) into mechanical work and heat.
Layering.
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