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VVWA
| term | Definition |
|---|---|
| Autotroph | an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. |
| Heterotroph | an organism deriving its nutritional requirements from complex organic substances. |
| Organism | an individual animal, plant, or single-celled life form. |
| Habitat | the natural home or environment of an animal, plant, or other organism. |
| Biotic factor | the living components organisms that shape up the environment. |
| Abiotic factor | |
| Species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted |
| Population | a particular section, group, or type of people or animals living in an area or country. |
| Community | a group of people living in the same place or having a particular characteristic in common. |
| Ecosystem | |
| Ecology | |
| Immigration | |
| Emigration | |
| Population density | |
| Limiting factor | |
| Carrying capacity | |
| Natural selection | |
| Adaptation | |
| Niche | |
| Competition | |
| Predation | |
| Mutualism | |
| Commensalism | |
| Parasitism | |
| Parasite | an organism that lives in or on an organism of another species its host and benefits by deriving nutrients at the other's expense. |
| Host | |
| Succession | |
| Primary succession | |
| Pioneer species | |
| Secondary succession | |
| Producer | |
| Consumer | |
| Herbivore | |
| Carnivore | |
| Omnivore | |
| Scavenger | |
| Decomposer | |
| Food chain | |
| Food web | |
| Energy pyramid | |
| pyramid fixation | |
| Biome | |
| Climate | |
| Desert | |
| Rain forest | |
| Emergent layer | |
| Canopy | |
| Dispersal | |
| Exotic Species | |
| Point source | |
| Nonpoint source | |
| Biodegradable | |
| Natural resource | |
| soil conservation | |
| crop rotation | |
| Contour plowing | |
| Conservation plowing | |
| Biodiversity | |
| Keystone species | |
| Endangered species | |
| Threatened species | |
| Extinction | |
| Habitat destruction | |
| Habitat destruction | |
| Poaching | |
| Captive breading |