<span>She should mention the effect of nicotine on vasoconstriction. When nicotine is ingested, it can cause blood vessels in the peripheries to narrow and leads to an increase in blood pressure. This can lead to any number of deleterious outcomes, such as hypertension and heart disease.</span>
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Muscle contraction occurs when the thin actin and thick myosin filaments slide past each other. It is generally assumed that this process is driven by cross-bridges which extend from the myosin filaments and cyclically interact with the actin filaments as ATP is hydrolysed.
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Lipids and Proteins are considered micro molecules
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check this it has six differences think it's helpful
The closest answer is A. .9, because on the National Geographic society it says .3%