Which of the following correctly describes DNA? - Nucleic acid composed of amino acids
- Nucleic acid composed of nucleotides
- Protein composed of amino acids
- Protein composed of nucleotides

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

As a small change in a person's dna can cause a genetic disorder

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.