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aletadaboss
10.03.2020 •
Biology
Varicose veins seen in the superficial veins of the legs are unsightly and are often treated by surgical removal. However, even without these veins being present, the return of all blood toward the heart from the legs is not diminished. This is primarily because .
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Ответ:
Molecular clouds.
Explanation:
High-density and super-heated clouds of matter in a stellar nursery come together and form hot, nuclear balls of plasma called stars.