Help chemistry pls answer

An atomic nucleus is composed ofa)protons.b)protons and neutrons.c)protons and electrons.d)protons, neutrons, and electrons.

How is the solubility of a carbon dioxide gas in water increase?

Choose the correct statement about licensed veterinarians in the united states. a. they must be certified by the avma. b. they can treat all nonhuman animals. c. they can can treat only animals specified on the license. d. they must choose a specialty.