Carbon 14 is a radioactive isotope of carbon
Answer:
Manatee (A)
Explanation: Looking the graphic, Manatees live near the Equator, where is "hot" water place, and if you notice the other place are near cold water where none of them will avoid it.
Answer: Option A) Amino acids
Explanation:
The animal hair has rich deposits of keratin, a protein that helps the hair stand erect, tough and rigid in its shaft.
And since protein are macromolecules made up of several units of amino acids, we can safely say animal hair is made of amino acids