| A | B |
|---|
| Predator | an organism that eats and hunts other organisms |
| Prey | an organism that is eaten and hunted |
| Parasitism | a relationship between two organisms in which one organism lives on or in the other ~ it feeds upon it and usually harms it |
| Commensalism | a close relationship between two kinds of organisms that benefits one of the organisms while neither benefiting nor hurting the other. |
| Mutualism | a close relationship between two or more organisms in which all organisms benefit |
| Symbiosis | long-term relationships with other species |
| Food chain | the path of energy transfer from one organism to another |
| Food web | overlapping food chains that link producers, consumers, and decomposers to the ecosystem |
| Carbon-dioxide Oxygen Cycle | a natural cycle in which plants and other producers use carbon dioxide and produce oxygen, and living things use oxygen and produce carbon dioxide |
| Water Cycle | a continuous process in which water moves between the atmosphere and Earth's surface, including its use by living things |
| eVAPORation | the process by which liquid water changes to water VAPOR |
| condensation | the process by which water vapor is changed to liquid water |
| Nitrogen Cycle | the cycle through which nitrogen gas is changed into compounds that can be used by living things and then is returned to the atmosphere |
