WebEarth and atmospheric science There is evidence that the Earth's early atmosphere contained less oxygen, but more carbon dioxide and water vapour, than today. Increased … WebThe composition of the atmosphere has changed since the Earth was formed 4.5 billion years ago. Natural processes and human activity have changed the atmosphere, and continue to change it today.
Causes of climate change - human and natural factors - BBC Bitesize
WebThe Earth and atmosphere Key points The atmosphere is a mixture of gases. The atmosphere is mostly nitrogen (approximately 80%) and oxygen (approximately 20%). … WebThe Earth’s early atmosphere The Earth formed approximately 4.6 billion years ago. Scientists cannot be certain about what gases made up the Earth’s early atmosphere. … The Earth radiates energy as infrared radiation. Some of the infrared radiation … Get ready for your exams with this BBC Bitesize GCSE Chemistry of the … portail swile
What is carbon dioxide (CO₂)? - BBC Bitesize
WebThe Earth's atmosphere is its outermost layer. The atmosphere is a mixture of gases and extends about 700 km above the Earth's surface. Scientists identify different layers of the... WebCarbon dioxide is a. compound. . Its molecules consist of one carbon atom joined to two oxygen atoms. In the atmosphere, carbon dioxide is a. greenhouse gas. . We use carbon dioxide to make drinks ... WebBrown coal power plant. The major cause of climate change is the burning of fossil fuels. Burning fossil fuels releases carbon dioxide (and other Greenhouse gases) into the atmosphere, which traps ... portail teamviewer