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Science Vocab Ch. 3
science vocab for chapter 3
| Question | Answer |
|---|---|
| Ecology | Study of the interactions between organisms and their enviroment. |
| Autotrophs | Organisms that use sunlight or energy to make food. |
| Producers | Organisms that make their own food (same as autotrophs) |
| Photosynthisis | Process used by autotrophs to make food energy from the sun. |
| Chemosynthisis | Autotrophs that capture chemical energy since they live in places without sunlight. |
| Decomposers | Break down waste and organic matter and return them to the ecosystem. |
| Herbivore | Eats only plants |
| Carnivore | eats only meat (animals) |
| Omnivore | eats plants and meat |
| Consumers (or heterotrophs) | cant make their own food. |
| Food chains | show how matter and energy move through the ecosystem in a series of steps, showing which organisms transfer energy by eating and being eaten. |
| Food web | models that show all possible feeding relationships at each trophic level in a community; links all food chains together. |
| Biogeochemical cycles | elements, compounds and other forms of matter are passed on from one organism to another and from one part of the biosphere to another. |
| Water cycle | shows that water is constantly moving between the atmosphere and Earth. |
| Biotic factors | all living or once-living organisms in an enviroment. |
| Abiotic factors | all non-living parts of the enviroment |
| Habitat | an area where an organism lives; includes both biotic and abiotic factors |
| Niche | all strategies and adaptations a species uses in its enviroment. |
| Symbiosis | any relationship in which two species live closely together |
| Predators | organisms that seek out and eat other organisms. |
| Prey | organisms that are eaten |
| Mutualism | both species benifit from a relationship |
| Commensalism | one organism benefits and the other is neither helped nor harmed |
| Parasitism | one organism lives on or in organisms that harms it |
| Living Factor | anything that limits an organism's ability to live in a particular enviroment. |
| Torelance | the ability of livng things to survive the changes in their enviroment. |
| Succession | the process of gradual, natural, change and species replacement that takes place in the communities of an ecosystem over time. |
| Biome | large group of ecosystems that share the same type of climax community |
| Aquatic Biome | biomes located in bodies of water (marine or freshwater) |
| Terrestrial Biome | biomes located on land |
| Tundra | coldest biome, permanently frosted/frozen |
| Taiga | pine trees, long and cold winters |
| Desert | hot and dry, rocky soil |
| Savannah | warm and limited rain, open grasslands. |
| Temperate Forest | warm summers and cold winters, fertile soil, leafy trees |
| Tropical rain forest | hot, plentiful rain, abundance of plant and animal species |
Created by:
user-1980666
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