species – n. a group of animals or plants that are similar and can produce young animals or plants

dinosaur – n. one of many reptiles that lived on Earth millions of years ago

sequencing – v. to determine the order in which things happen or should happen

hypothesis – n. an idea or theory that is not proven but that leads to further study or discussion

biodiversity - n. the existence of many different kinds of plants and animals in an environment

cohort – n. a friend or companion

extraterrestrial – n. coming from or existing outside the planet Earth

cool – adj. very good or excellent