<span>It allows them to discuss a range of similar diseases without naming them all. It can also help figure out what kind of treatment someone might need.
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Making changes to improve the quality of life for people.
The answer would be D because the proportion is 6:9, which could be simplified to 2:3
Epidermis; the blood vessels contract. Epidermis; the blood vessels dilate. Dermis; the blood vessels dilate. Dermis; the blood vessels contract. i think it D