| A | B |
|---|
| Ecology | the study of the interactions between organisms and their environment |
| Biotic | living factors in the environment |
| Abiotic | nonliving factors in the environment |
| Population | a group of individuals of the same species that live together in the same area at the same time |
| Community | all of the populations of different species that live and interact in an area |
| Ecosystem | a community of organisms and their environment |
| Biosphere | the part of the Earth where life exists |
| Herbivore | a consumer that eats plants |
| Carnivore | a consumer that eats animals |
| Omnivore | a consumer that eats a variety of organisms |
| Scavenger | an animal that feeds on the bodies of dead animals |
| Food chain | a diagram that represents how the energy in food molecules flows from one organism to the next |
| Food web | a complex diagram representing the many energy pathways in a real ecosystem |
| Energy Pyramid | a diagram shaped like a triangle showing the loss of energy at each level of the food chain |
| Habitat | the environment where an organism lives |
| Niche | an organism’s way of life and its relationships with its abiotic an biotic environment |
