What are the names of four polysaccharides and what is required for their formation?

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.

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give

What are 3 reasons that natural selection occurs