PlS HeLpzz Explain how physical version is expressed in human beings and how it relates to cultural groups and ethnicity

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.

Isotopes of the same element have differ in their

Which describes the changes in the earths motion?