Answer:
1c. Pharyngeal pouches
2d. Reduce water concentration
3b. A diploid (2N) adult organism
4c. Duck
5a. a chimpanzee figuring out how to use a new tool to obtain a hidden food source
6a. salamander
7c. Annelids and mollusks
8b. cell wall and chloroplasts
9c. seeds
10d. Protection and immunity
Water's polarity makes it an excellent solvent for salts, like sodium chloride, as other substances required by cells to carry out metabolic processes.
Less people would buy and the economy's health would go down.