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4th grade chapter 4
Ecosystems
Term | Definition |
---|---|
producer | living thing that eats its own food |
ecosystem | all of the living and nonliving things in an environment and the many ways they interact |
consumer | living things that eat other living things |
habitat | area or place where an organism lives in an ecosystem |
herbivore | animal that eats plants |
population | all of the members of one species that live within an area of an ecosystem |
fossil | remains or mark of animal that lived long ago |
food chain | the transfer of energy from one organism to another by eating and being eaten |
carnivore | animal that gets food by eating other animals |
extinct | no longer existing as a species |
food web | system of overlapping food chains in which the flow of energy branches out in many directions |
onmivore | animals that eat plants and other animals |
paleontologist | a scientist who studies fossils |
competition | occurs when 2 or more organisms need the same resources in order to survive |
decomposer | organism that breaks down plant and animal remains |