| Term | Definition |
|---|
| Community | All interacting populations living in the same geographic area |
| Ecology | Study of how living organisms interact with the physical and biological environments. |
| Abiotic | Non-living chemical and physical factors of the environment (e.g. temperature, light, water, soil, nutrients). |
| Biotic | Living organisms that are part of the environment. |
| Population | A group of individuals of the same species living in the same geographic area. |
| Ecosystem | All interacting communities of organisms and abiotic factors of the environment within a defined area. |
| Biosphere | The global ecosystem, including all the Earth's regions that can support life (land, air, water). |
| Water Cycle | The continuous circulation of water on Earth. |
| Photosynthesis | The process plants and some bacteria use to make carbohydrates from carbon dioxide and water using light energy from the Sun. |
| Cellular respiration | The process living organisms use to turn carbohydrates into usable energy. Besides energy, the process releases carbon dioxide, and water. |
| Carbon Cycle | The exchange of carbon between organisms and the environment. Carbon dioxide is absorbed from the atmosphere by plants and algae and converted to carbohydrates by photosynthesis. Carbon is then passed into the food chain and returned to the atmosphere by the respiration and decay of animals, plants, and other organisms. The burning of fossil fuels also releases carbon dioxide into the atmosphere. |
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