Lesson 15 Vocabulary

habitats: the environments that animals and plants live in species: a group of plants or animals that are alike organisms: living things such as plants or animals traces: marks left by people, animals, or things vast: great in size directly: in a clear and obvious way affect: to have an influence on variety: a number of slightly different things within the same grouping radiation: energy in the form of rays or waves banned: not allowed; forbidden