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Biology3
| Question | Answer |
|---|---|
| Ecology | The scientific study of interactions among organisms and between organisms and their environment or sorroundings |
| Bioshpere | The largest the three "Nature's" houses, contains all the combined portions of hte plants in which all the life exists, including land, water and air or atmosphere |
| Species | Group of organisms so similar to one another that they can breed and produce fertile offspring |
| Population | Groups of individuals that belong to the same species and live in the same are |
| Community | Assemblages of different populations that together in a defined area |
| Ecosystem | A collection of all the organisms, that live in a particular place, together with their nonliving, or physical, environment |
| Biome | A group of ecosystems that have the same climate and similar dominant communities |
| Autotroph | Plants, some algae, and certain bacteria that can capture energy from the sunlight or chemicals and use the energy to produce food |
| Producer | Use energy from the environment to make food |
| Photosynthesis | Process in which autotrophs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy rich carbohydrates |
| Chemosynthesis | When organisms use chemical energy to produces carbohydrates |
| Heterotroph | Organisms that rely on other organisms for their energy and food supply |
| Consumer | Another name for a heterotroph |
| Herbivore | Obatin enery by eating only plants |
| Carnivore | Eat animals |
| Omnivore | Eat both plants and animals |
| Detritivore | Feed on plant and animal remains and other dead matter |
| Decomposer | A group of heterotrophs that break down organic matter |
| Food Chain | A series of steps in which organisms transfer energy by eating and being eaten |
| Food Web | When the feeding relationships among various organisms in an ecosytem form a network of complex interactions |
| Trophic Level | Each step in a food web or food chain |
| Ecological Pyramid | A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or food web |
| Biomass | The total amount of living tissue within a given trophic level |
| Biogeochemical Cycle | Elements. chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another |
| Evaporation | The process by which water changes from a liquid form to an atmospheric gas |
| Transpiration | When water enters that atmoshpere by evaporating from leaves of plants |
| Nutrient | All the chemical substances that an organism requires to live |
| Nitrogen Fixation | Converting nitrogen gas into ammonia |
| Denitrification | Converting nitrates into notrogen gas |
| Primary Productivity | The rate at which an organic matter is created by producers |
| Limiting Nutrient | When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly |
| Algal Bloom | The immediate increase in the amount of algae and other producers resulting from a large input of limiting nutrient in an aquatic ecosytem |