Animal hair is made of
a. amino acids.
b. rayon.
c. acetate.
d. polyvinyl chloride.

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

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…