The answer is A i just took the test
A- Mixture in which its components retain their identity.
Do you mean "the- people"?
Aquatic ecosystems can be classified as freshwater and marine ecosystems.
protein digestion begins when you first start chewing. there are two enzymes in your salvia called amylase and lipase. they most break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid enzymes called proteases break it down into smaller chains of amino acids
