How does the section “Many Chemical And Physical Changes Are Happening In Nature” relate to section “Matter Isn't Lost In Photosynthesis”

Compare and contrast nutrient limitation in soil vs. nutrient limitation in aquatic ecosystems

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.

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.