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Living Env Topic 6
Stack #20762
| Question | Answer |
|---|---|
| Abiotic | nonliving parts of the environment |
| Autotroph | an organism that produces its own food; the source of energy for all other living things on Earth |
| Biodiversity | the variety of species in an area |
| Biome | large groups of ecosystems with similar climates and organisms |
| Biosphere | all of Earth’s ecosystems, collectively; the biologically inhabited portions of Earth, including all of the land, water and air in which organisms survive |
| Biotic | the living parts of the environment |
| Carnivore | an organism that survives by eating animals |
| Carrying capacity | the largest population of any single species that an area can support |
| Community | a combination of all the different populations that live and interact in the same environment |
| Competition | the struggles between organisms for the same limited resources in a particular area |
| Consumer | an organism that obtains its energy from producers |
| Decomposer | an organism, generally a bacterium or fungus, that consumes dead organisms and organic waste |
| Decomposition | the process by which dead organisms, as well as wastes produced by living organisms, are broken down into their raw materials and returned to the environment |
| Ecology | the study of how living things interact with one another and with their environment |
| Ecological niche | the specific role played by an organism or a population of organisms in the ecosystem |
| Ecological succession | the process by which an existing community is replaced by another community |
| Ecosystem | all the living things and nonliving things that interact with one another and with their environment |
| Energy pyramid | a diagram showing how food energy moves through the ecosystem |
| Environment | every living and non-living thing that surrounds an organis |
| Food chain | a representation that identifies the specific feeding relationships among organisms |
| Food web | a representation of many interconnected food chains that shows feeding relationships between producers, consumers, and decomposers |
| Habitat | the where an animal or plant lives |
| Herbivore | an organism that eats only plants |
| Heterotroph | organism that cannot make its own food; a consumer |
| Host | the organism in a parasitic relationship that provides a home and/or food for the parasite |
| Limiting factor | any factor in the environment that limits the size of a population |
| Parasite | an organism that survives by living on and feeding on other living organisms |
| Population | all the individuals of a single species that live in a specific are |
| Predator | an animal that hunts and kills other animals for food |
| Prey | an animal that is hunter and killed by predators |
| Producer | an organism that makes its own food from light energy and inorganic material |
| Scavenger | a carnivore that feeds on the bodies of dead organisms |
Created by:
scottp
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