Greenhouse Effect - Gases in the atmosphere, such as carbon dioxide and methane, trap heat from the Sun, leading to an increase in Earth's average temperature., Carbon Cycle - The natural process by which carbon is exchanged between the atmosphere, ocean, and living organisms., Troposphere - The layer of Earth's atmosphere closest to the surface, where weather occurs., Photosynthesis - The process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen., Fossil Fuels - The burning of coal, oil, and natural gas, which releases carbon dioxide and contributes to global warming., Oxygen - The gas essential for respiration and combustion, making up about 21% of Earth's atmosphere., Nitrogen - The primary component of Earth's atmosphere, making up about 78% of it., Stratosphere  - A layer of Earth's atmosphere located above the troposphere and contains the ozone layer, which helps protect us from harmful ultraviolet (UV) radiation from the Sun., Methane - A group of organic compounds that contribute to the greenhouse effect and is released during activities like agriculture and livestock., The Mesosphere - The middle layer of Earth's atmosphere, located above the troposphere and stratosphere, where temperatures decrease with altitude and meteors burn up upon entry due to high friction with air molecules.,

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