Science Chapter 5
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22 terms
Terms | Definitions |
|---|---|
 photosynthesis | process by which plants make food using energy from the sun |
| respiration | process by which energy is released from food |
| carbon-oxygen cycle | movement of carbon & oxygen through the environment |
| sugar | food produced by plants |
| nitrogen fixation | changing nitrogen gas into usable nitrogen compounds |
| bacteria | perform most nitrogen fixation |
| lightning | responsible for some nitrogen fixation |
| water cycle | movement of water throughout the environment |
| nitrogen cycle | movement of nitrogen throughout the environment |
| evaporation | when water is heated & changed into a gas |
| transpiration | process through which water evaporates from a plant's leaves |
| precipitation | water that falls to Earth from a cloud |
| condensation | when water changes from water vapor to a liquid |
| dust | what clouds form around |
| 1% | percent of Earth's water that is usable, fresh water |
| producers | plants |
| consumers | organisms that eat or consume other organisms |
| food chain | transfer of energy from organism to organism |
| food web | overlapping food chains in an ecosystem |
| decomposers | organisms that break down organic matter |
| scavengers | organisms that eat dead things they find |
| algae & plants | carry out photosynthesis & produce oxygen |
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