Answer:
Agriculture: The applied branch of biology which deals with cultivation of plants and rearing of animals is called agriculture. Generally, the art or practice of cultivating land is referred as agriculture. The branch of agriculture which deals with food, health and management of animals is known as animal husbandry.
Germs is the microorganism that causes colds most.
I believe its C. Atomic numbers represent the number of protons, thus, it can be concluded that an oxygen atom does indeed have more protons than a hydrogen atom :)