Repost again: Plants and animals (and all other living things) are part of all the natural cycles through food chains and food webs. The four classes of macromolecules used by living things are carbohydrates, lipids, proteins, and nucleic acids. For each class of macromolecule, research what components are needed to make them, and relate the importance of the nitrogen and carbon cycle to the formation of these macromolecules.

For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle