A covalent bond is a chemical bond which involves the sharing of atoms.
Answer:
Organ systems: human body and circulatory system
organs: heart
tissue: muscle
Explanation:
Answer:
if anaerobic activity takes place over a long period of time the muscles soon become exhausted
Answer:
Facilitated diffusion require no energy and travels down the gradient of concentration. On the other hand, active transport takes energy and travels up the gradient of concentration.
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The volume is mass density is h,w,l