Terms : Hide Images
| 1450982836 | ecology | scientific study of interactions among organisms and between organisms and their environment. | 0 | |
| 1450982837 | bioshpere | part of earth in which life exists including land, water, and air or atmoshpere. | 1 | |
| 1450982838 | species | group of similar organisms that can breed and produce fertile offspring. | 2 | |
| 1450982839 | populations | group of individuals of the same species that live in the same area. | 3 | |
| 1450982840 | communities | different populations that live together in a defined area. | 4 | |
| 1450982841 | ecosystem | collection of all organisms that live in a particular place, together with their nonliving environment. | 5 | |
| 1450982842 | biome | group of ecosystems that have the same climate and dominant communities. | 6 | |
| 1450982843 | autotrophs | producer. Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds. | 7 | |
| 1450982844 | producers | autotrophs. Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds. | 8 | |
| 1450982845 | photosynthesis | process by which plants and other organisms use light energy to convert water and carbon dioxide into oxygen and high-energy carbohydrates such as sugars and starches. | 9 | |
| 1450982846 | chemosynthesis | process by which some organisms use chemical energy to produce carbohydrates. | 10 | |
| 1450982847 | heterotroph | Consumer. Organism that obtains energy from the foods it consumes. | 11 | |
| 1450982848 | consumers | Heterotroph. Organism that relies on other organisms for its energy and food supply. | 12 | |
| 1450982849 | herbivores | organism that obtains its energy by eating only plants. | 13 | |
| 1450982850 | carnivores | organism that obtains energy by eating animals. | 14 | |
| 1450982851 | omnivores | organism that obtains energy by eating both plants and animals. | 15 | |
| 1450982852 | detritivores | organism that feeds on plant and animal remains and other dead matter. | 16 | |
| 1450982853 | decomposers | organism that breaks down and obtains energy from dead organic matter. | 17 | |
| 1450982854 | food chain | series of steps in an ecosystem in which organisms transfer energy by eating and being eaten. | 18 | |
| 1450982855 | food web | network of complex interactions formed by feeding relationships among the various organisms in an ecosystem. | 19 | |
| 1450982856 | trophic level | step in a food chain or food web. | 20 | |
| 1450982857 | ecological pyramid | diagram that shows the relative amounts of energy or matter within each trophic level in a food chain or food web. | 21 | |
| 1450982858 | biomass | total amount of living tissue within a given trophic level. | 22 | |
| 1450982859 | biogeochemical cycles | process in which elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another. | 23 | |
| 1450982860 | evaporation | process by which water changes from a liquid into an atmospheric gas. | 24 | |
| 1450982861 | transpiration | loss of water from a plant through its leaves. | 25 | |
| 1450982863 | nutrients | chemical substance that an organism requires to live. | 26 | |
| 1450982865 | nitrogen fixation | process of converting nitrogen gas into ammonia. | 27 | |
| 1450982866 | denitrification | conversion of nitrates into nitrogen. | 28 | |
| 1450982868 | primary productivity | rate at which organic matter is created by producers in an ecosystem. | 29 | |
| 1450982870 | limiting nutrient | single nutrient that either is scarce or cycles very slowly, limiting the growth of organisms in an ecosystem. | 30 | |
| 1450982871 | algal bloom | an immediate increase in the amount of algae and other producers that results from a large input of a limiting nutrient. | 31 |
