Spencerg325
13.07.2019 •
Biology
Choose all the answers that apply. skin is a surface barrier to infection, secretes acidic chemicals that can destroy microorganisms, is part of the integumentary system, is the first line of defense against infection, secretes mucus that traps foreign substances
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Ответ:
Ответ:
Explanation:
*is the first line of defense against infection, *is part of the integumentary system, *secretes acidic chemicals that can destroy microorganisms & *is a surface barrier to infection
Ответ:
DNA allows them to reproduce. They pass on their DNA to their offspring which is basically genes. Their genes are given to their offspring in order to live. The proteins help with oxygen levels and energy. And all living things need oxygen
Explanation: