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SPA Science Unit 3
Unit 3 Vocab
| Question | Answer |
|---|---|
| Adaptations | the behaviors and physical characteristics that allow organisms to live successfully in their environment. |
| Birth Rate | the number of births in a population in a certain amount of time |
| Carnivore | a organism that eats only animals |
| Carrying Capacity | the number of predator and prey populations that a given habitat can sustain. |
| Commensalism | A relationship in which one species benefits and the other is neither helped nor harmed |
| Consumer | an organism that eats another organism for energy |
| Competition | the struggle between organisms to survive as they attempt to use the same limited resource |
| Death Rate | the number of deaths in a population in a certain amount of time |
| Decomposer | an organism that feeds off of other organisms waste and remains for energy |
| Emigration | Moving out of a habitat |
| Energy Pyramid | Shows the amount of energy that moves from one feeding level to another in a food web. |
| Estimate | an approximation of a number, based on reasonable assumptions |
| Food Chain | a series of events in which one organism eats anothe and obtains energy |
| Food Web | consists of the many overlapping food chains in a ecosystem |
| Herbivore | an organism that eats only plants for energy |
| Host | the organism that the parisite lives on in Parasitism |
| Immigration | moving into a habitat |
| Limiting Factor | an environmental factor that causes a population to decrease |
| Mutualism | A relationship in which both species benefit |
| Natural Selection | A characteristic that makes an individual better suited to its environment may eventually become common in that species through a process called natural selection. |
| Niche | The role of an organism in its habitat, or how it makes its living |
| Omnivore | an organism that eats both plants and animals for energy |
| Parasitism | involves one organism living on or inside another organism and harming it |
| Parasite | the organism that lives on or inside the host |
| Population Density | is the number of individuals over the unit area |
| Predation | An interaction in which one organism kills another for food |
| Predator | the organism that kills the other in predation |
| Producer | an organism that can produce its own food |
| Prey | the organism that is eaten in predation |
| Scavenger | an carnivore that eats dead animals (vulters, etc.) |
| Symbiosis | a close relationship between two species that benefits at least one of the species |
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