Organisms become extinct only in mass extinction events. True or false?

How does the endocrine system affect the body's functions? o o o o it secretes enzymes directly into the bloodstream. it secretes hormones directly into the bloodstream. it secretes enzymes through ducts to the surface of organs. it secretes hormones through ducts to the surface of organs.

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What are three important public health tools for addressing heart disease? identify the tools, and explain why they are a benefit to public health. you! : )