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Ecology- Elaine
Ecology unit- Science- Elaine Miller
| Question | Answer |
|---|---|
| niche | how an organism survives, inclucing it's habitat, how it obtains food & shelter, & how it avoids danger |
| habitat | where an organism lives |
| population | all organisms in an ecosystem that belong to the same species |
| community | all populations in an ecosystem |
| ecosystem | all organisms living in an area & the nonliving features of the environment |
| biosphere | part of the Earth that supports life, including the top part of the Earth's crust, all water on Earth, & the surrounding atmosphere |
| limiting factor | anything that restricts the number of individuals in a population |
| carrying capacity | the largest number of individuals of one species that an ecosystem can support over time |
| ecology | the study of interactions that occur among organsims & their environment |
| producer | organisms that use an outside energy source, such as the Sun, to make energy-rich molecules |
| consumer | organisms that can't make their own energy-rich molecules |
| symbiosis | any close relationship between species |
| mutualism | a symbiotic relationship in which both species benefit |
| commensalism | a symbiotic relationship where one organism benefits & the other isn't affected |
| parasitism | a symbiotic relationship in which one organism benifits but the other is harmed |
| predator | consumers that capture and eat other consumers |
| prey | the organism that is captured by the predator |
| competition | fighting for necesary life materials |
| chemosynthesis | the process of making food from chemicals |
| food chain | a way of showing how matter and energy pass from one orgainsim to another |
| food web | a model that shows all the possible feeding relationships among the orgainisms in a community |
| energy pyramid | shows the amound of energy available at each feeding level in the ecosystem |