The volume is mass density is h,w,l
Keratin
Protecting the skin is one of its main responsibilities as a protein in epidermis.
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Answer: I'd say the answer would be (A)
Explanation:Depending on the Anphibian, they breathe through their lungs and skin at first and develope Gills later in life. Some are born with gills and lungs. But normally they start with lungs first.
Answer:
molecule
Explanation:
because water aka h20 is a molecule
Answer:
D.
holds the bones of the skeleton together
Explanation:
