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Earth Systems
Question | Answer |
---|---|
atmosphere | The gases surrounding a planet or moon, held by gravity |
biosphere | The collection of organisms on earth |
biodiversity | the variety of life on Earth or in a particular region |
carbon dioxide | The primary greenhouse gas emitted by human activities |
carbon footprint | The amount of carbon dioxide released by a human activity |
climate | Average weather conditions of a region over a long period of time |
climate change | Any change in the climate of a region or the entire planet |
fossil fuel | An energy source from the remains of ancient organisms |
geosphere | A planet's rocks, metals, soils and sediments |
global warming | A gradual increase in global mean surface temperature |
greenhouse effect | A natural warming of a planet's surface and lower atmosphere |
greenhouse gas | A gas that can absorb and re-emit infrared radiation |
hydrosphere | Water on or near the surface of a planet |
weather | Atmospheric features that change on a day to day basis |