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Science Chapter 3
Question | Answer |
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photosynthesis | The process by which a green plant turns water and carbon dioxide into food when the plant is exposed to light. |
symbiosis | The close relationship two species share in an ecosystem. |
mutualism | A relationship in which both species benefit. |
commensalism | A relationship in which one species benefits and the other species in neither helped nor harmed. |
parasite | An organism living on or inside another organism (host) that takes nutrients away from the host, which harms it. |
community | The group of all populations in an area. |
ecosystem | All the living and nonliving things in an area and their interactions. |
predator | A consumer that hunts and eats another animal. |
habitat | A place that provides all the things an organism needs to live. |
prey | Any animal that is hunted by others for food. |
population | A group of organisms of one species that live in an area at the same time. |
competition | The struggle among organisms for the same limited resources. |
food chain | A series of steps by which energy moves from one type of living thing to another. |
producer | Organism that makes its own food for energy. |
pollution | Any substance that damages the environment. |
food web | A diagram that combines many food chains into one picture. |
consumer | Organism that cannot make its own food. |
conservation | An attempt to preserve or protect an environment from harmful changes. |
environment | All of the conditions surrounding an organism. |
decomposer | Organism that gets its energy by breaking down waste and dead organisms. |