Ecology - A branch of science that deals with the relation of organisms to one another and their physical environment.⏎
Exoskeleton - An external skeleton that protects and supports an organism, in contrast to an internal endoskeleton.⏎
DNA - Short for deoxyribonucleic acid, DNA is any of the nucleic acids that contain the genetic instructions necessary for the development and functioning of all living organisms as well as some viruses.⏎
Evolution - The change in heritable traits in a population of organisms over successive generations.⏎
Genetics - A branch of biology that studies heredity and variation in organisms.⏎