Ahawk maintains a constant internal temperature in both the heat of the day and the cool of night this is

a: endothermy
b: photothermy
c: ectothermy
d: noctothermy

Although there are a limited number of amino acids many different types of proteins exist because..

Organisms within a population must compete for resources to survive

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.