There are four groups of macromolecules. Carbohydrate, Protein, Nucleic acid, and Lipids. Each macromolecule is essential for the growth and formation of cells. Carbohydrates are used for energy and help build the structure of the cell wall. Proteins help build and regulate muscle and tissue. Nucleic acid transfers
and stores information. Lastly Lipids insulate your body and help produce hormones.
Answer:
About 20 percent of all oxygen produced comes from the Amazon.
Answer:
B
Explanation:
All good chains start with the energy from the sun. then energy is captured by plants
