12. What group of organisms are most in danger of extinction? those with small populations

both a and b

those with large populations that breed quickly

those that migrate or need special habitats

and after water is usually warmed by the sun the water temperature raises and then evaporates .

c is the answer to this question. altitude affects the weather because air molecules evaporate.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.