Answer:
The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are built primarily of carbon, hydrogen, and oxygen but in different ratios.
Explanation:
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Answer: This evidence reveals what our planet was like long ago. Fossils also show how animals changed over time and how they are related to one another.
Explanation:
Chromosomes, which are found in the nucleus of a cell, contain genes. A gene is basically a section of DNA, which carries some type of coding for particular protein. The structure in which all genetic information can be found is your DNA (short for D<span>eoxyribonucleic Acid). (I don't know if the first part helped?).</span>