A) Amino acids are small molecules that are the building blocks of proteins
b) Hydrocarbons are molecules that contain only carbon and hydrogen.
c) A carbohydrate is a biomolecule consisting of carbon, hydrogen and oxygen atoms, usually with a hydrogen–oxygen
d) Alcohol is an organic compound with one or more hydroxyl groups.
e) Cholesterol is a waxy type of lipid, a substance that is insoluble in water, like oil or fat.
<span>Animals must switch between ectotherm and endotherm methods. Ectotherms and edotherms are diiferent types of animals, which use different approches for maintaing body temperature. </span>
Answer:
B. an increase in the overall temperature of the earth
Explanation:
C invasive species
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