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science flashcards
| Term | Definition |
|---|---|
| overexploitation | the overuse of animal & plant species by humans |
| carrying capactiy | the largest # of individuals of one species that an ecosystem can support overtime |
| biotic potential | the potential growth of a population if it could grow in perfect conditions with no limiting factors |
| biodiversity | the number & variety of organisms found in a specific region |
| invasive species | an organism that is introduced into an ecosystem, either by accident or on purpose, either by accident or on purpose, that spreads on it's own & out competes native species for resources |
| natural material | any physical matter that is obtained made from plants, animals, or the ground |
| overpopulation | condition that occurs when a population becomes so large that it causes damage to the environment |
| synthetic material | a material obtained from a natural material that has undergone a chemical reaction |
| by-product | a secondary product that results from manufacturing process or chemical reaction |
| photosynthesis | a series of chemical reactions that convert light energy, water, & carbon dioxide into the food-energy molecule glucose & give off oxygen |
| ecosystem | all the living things & nonliving things in a given area |
| producer | an organism that uses an outside energy source, such as the sun, and produces its own food |
| consumer | an organism that cannot make its own food & gets energy by eating other organisms |
| detrivore | an organism that consumes the bodies of dead organisms & wastes produced by living organisms |
| food chain | a model that shows how energy flows in an ecosystem through feeding relationships |
| food web | a model of energy transfer that can show how the food chains in a community are interconnected |
| condensation | the process by which a gas changes to a liquid |
| precipitation | water in liquid or solid form, that falls from the atmosphere |
| species | a group of organisms that have similar traits & are able to produce fertile off-spring |
| pollution | the contamination of the environment with substances that are harmful to life |
| biome | a geographic area on earth that contains ecosystems with similar biotic & abiotic features |
| symbiosis | a close, long-term relationship between two species that usually involves an exchange of food or energy |
| biosphere | the parts of earth & the surrounding atmosphere where there is life |
| paratism | a symbiotic relationship between two organisms where one benefits & the other is harmed |
| species | a group of organisms that have similar traits & are able to produce fertile offspring |
| commensalism | a symbiotic relationship that benefits one species but does not harm or benefit the other |
| limiting factor | a factor that cam limit the growth of a population |
| community | all the populations living in an ecosystem at the same time |
| mutualism | a symbiotic relationship in which both organisms benefit |
| population | all the organisms of the same species that live in the same area at the same time |
| climate change | changes in climate patters over time |
| cellular respiration | a series of chemical reactions that convert the energy in food molecules into a usable form of energy called ATP |
| material | the mater from which a substance is or can be made |
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yeonjunnu
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