7th Grade - Ecology Science Definitions
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21 terms
Terms | Definitions |
|---|---|
 ecology | the study of the interactions between organisms and their environment |
| biotic | describes living factors in the environment |
| abiotic | describes non-living things 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 non-living environment |
| biosphere | a 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 orgaisms |
| scavenger | an animal that feeds on the bodies of dead animals |
| decomposer | an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients |
| producer | organisms that produce their own food, usually the energy from sunlight to make sugar |
| consumer | an organism that eats producers or other organisms for energy |
| 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 that shows 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 and biotic environments |
| deciduous | a tree, shrub or bush that loses its leaves in the autumn (fall) and grows them back in the spring |
| evergreen | a tree, shrub or bush that does not lose its leaves or needles in the fall and winter and keeps them all year long |
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