| A | B |
|---|
| abiotic | the non-living things in an ecosystem |
| biotic | the living things in an ecosystem |
| organism | a living thing |
| population | the number of one kind of organism in an area |
| community | all of the organisms that live in the same space |
| habitat | the environment where an organism lives |
| food chain | the path of energy from one organism to another in an ecosystem |
| food web | overlapping food chains with different pathways for the flow of energy in an ecosystem that shows competition |
| producer | a living thing that makes their own food using light |
| consumer | a living thing that must eat other living things to get energy |
| carnivore | an organism that only consumes plants |
| herbivore | an organism that only consumes plants |
| omnivore | an organism that consumes both plants and animals |
| decomposers | an organism that consumes dead organisms and makes soil rich in nutrients |
| ecosystem | all living and nonliving things that interact with each other in an environment |
| niche | the role an organism plays in its ecosystem. That means what does it eat and who it gives food to. |
| compete | when two organisms both want the same thing and have to fight over it |
| unique | Something unlike anything else |
| Carbon Cycle | How carbon dioxide is created by animal respiration and burning and then turned back into oxygen by photosynthesis |
| Nitrogen Cycle | Living things dispose of waste and die to give soil nitrogen |
| scavenger | An animal that eats dead animals and other animals leftovers |
| hibernate | When an animal goes into a deep sleeplike state until winter passes |
| migrate | When an animal moves to another part of the earth each season |
| Predator | An animal that hunts |
| Prey | An animal that gets killed and eaten by another animal |
| interdependent | When a group of living things depend of each other for survival |
