Which does food provide to organisms? homeostasis (A) shelter (B) energy (C) air (D)

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.

How many types of rock can form from the rock cycle

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?