<span>a)Stem cells must always be provided by a donor who is financially compensated.</span>
<span>One process wherein diffusion is important is the concentration of salt within a cell. When the salt levels are too high within the cell, salt molecules are moving via diffusion to a region of lower concentration. Another process is the movement of carbon dioxide in plant cells, where CO2 moves from regions of high concentration to regions of low concentration.</span>
Answer:
wow
Explanation:
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Mitochondria- it produces the energy for the cell. the muscle needs more energy because they are always functioning
