Science-chapter 10
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14 terms
Terms | Definitions |
|---|---|
 biotic | features of the environment that are alive or were once alive. |
| abiotic | nonliving, physical features of the environment including air, water, sunlight, soil, temperature, and climate. |
| atmosphere | air that surrounds our planet. |
| soil | dirt containing pieces of rock and the remains of dead organisms. |
| climate | the average weather conditions of a place over time. |
| evaporation | a liquid changing to a gas. |
| condensation | a gas changing to a liquid. |
| water cycle | model desribing how water moves from Earth's surface to the atmosphere and back to the surface again through evaporation, condensation, and precipitation. |
| nitrogen fixation | process which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use. |
| nitrogen cycle | model describing how nitrogen moves from the atmosphere to the soil to living organisms, and then back to the atmosphere. |
| carbon cycle | model describing how carbon molecules move betweeen the living and nonliving world. |
| chemosynthesis | process in which producers make energy-rich nutrient molecules from chemicals. |
| food web | model that shows the complex feeding relationships among organisms in a community. |
| energy pyramid | model that shows the amount of energy available at each feeding level in an ecosystem. |
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