Answer:
The frogs come from two sources, a mother and a father. The mother and the father have different genes so therefore, they are not going to look identical to one another.
Explanation:
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
C) 1 and 4
hope it heps.........................
C <span>less contaminants would flow into the drainage basin</span>
<span>grouping students based on their average marks in the previous year's final exam</span>