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Ecosystems
| Term | Definition |
|---|---|
| Biotic | relating to or resulting from living things, especially in their ecological relations. |
| Abiotic | physical rather than biological; not derived from living organisms. |
| Ecosystems | a biological community of interacting organisms and their physical environment. |
| Habitat | the natural home or environment of an animal, plant, or other organism. |
| Organism | an individual animal, plant, or single-celled life form. |
| population | all the inhabitants of a particular town, area, or country. |
| Community | a group of people living in the same place or having a particular characteristic in common. |
| Biosphere | the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms. |
| producer | a person, company, or country that makes, grows, or supplies goods or commodities for sale. "an oil producer" |
| consumer | an organism that cannot produce its own food and must eat other plants and/or animals to get energy. |
| decomposer | an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material. |
| Herbivore | an animal that feeds on plants. |
| Carnivoure | an animal that feeds on flesh. |
| omnivoure | an animal or person that eats food of both plant and animal origin. |
| scavenger | organism that eats dead or rotting biomass, such as animal flesh or plant material. |
| Predator | an animal that naturally preys on others. |
| Prey | an animal that is hunted or killed by another animal for food. |
| Niche | the role an organism plays in a community. |
| Biome | an area classified according to the species that live in that location. |
| Terrestrial Ecosystem | a land-based community of organisms and the interactions of biotic and abiotic components in a given area. |
| Deciduous Forest | characterized by trees that lose their leaves at the end of each growing season. |
| Grassland | generally open and continuous, fairly flat areas of grass. |
| Rainforest | a hot, moist biome where it rains all year long. |
| Desert | a landscape where little precipitation occurs and, consequently, living conditions create unique biomes and ecosystems. |
| Aquatic ecosystem | oceans, lakes, rivers, streams, estuaries, and wetlands. |
| freshwater | water containing less than 1,000 milligrams per liter of dissolved solids, most often salt |
| Pond | a small body of still water formed naturally or by hollowing or embanking. |
| Lake | a large body of water surrounded by land. |
| River/Stream | A stream is a body of water that flows on Earth's surface. A river large natural stream of water flowing in a channel to the sea, a lake, or another such stream. |
| Saltwater ecosystem | aquatic environments with high levels of dissolved salt. |
| Ocean | a very large expanse of sea, in particular each of the main areas into which the sea is divided geographically. |
| Saltmarsh | an area of coastal grassland that is regularly flooded by seawater. |
| Estuary | a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. |
| Food Chain | a linear sequence of organisms through which nutrients and energy pass as one organism eats another |
| Primary consumer | The organisms that eat the producers |
| secondary consumer | largely carnivores that feed on the primary consumers or herbivores. |
| Tertiary consumer | The organisms that prey on the secondary consumers |
| Trophic levels | The position an organism fills in a food chain |
| 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. |
| Food Web | consists of all the food chains in a single ecosystem. |
| Energy Pyramid | a model that shows the flow of energy from one trophic, or feeding, level to the next in an ecosystem. |
| Competition | the interaction of individuals that vie for a common resource that is in limited supply |
| Natural Resources | materials from the Earth that are used to support life and meet people's needs. |
| Brackish | somewhat salty or briny, as the water in an estuary or salt marsh, which is not as salty as the sea but saltier than a river: |