Botany, the science of plants. Botany is one of the major branches of biology, the science of living things. Other major branches are zoology, the science of animals, and microbiology, the science of microscopic organisms.There are more than two hundred thousand plant species throughout the world.
What constitutes happiness? Is it the absence of pain or an abundance of pleasure? It is simply a fortunate function of the brain? If it's the latter, then we should be able to manipulate it -- perhaps in the form of a "happy pill." It may surprise you, then, to learn that we already have one.
We have between 20,000 and 25,000 genes. That means a lot of opportunities for mistakes, and some of these mutations lead to disease. But it's a little more complicated than that.