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...carbon dioxide (CO2) 368 ppm methane (CH4) 1745 ppb nitrous oxide (N2O) 314 ppb ozone (O3) 10-100 ppb SAQ 7 Given the information in Table 1, how would you describe the bulk composition of the lower atmosphere? Answer 99% is nitrogen and oxygen (roughly in a 4 : 1 ratio), and most of the rest (0.93%) is argon. SAQ 8 Is any one of these major components a greenhouse gas?...

...Carbon Brief Climate Communications, Aspen Global Change Institute Parmesan Videos: lectures and interviews video lecture: "Biodiversity and Climate Change", Linnean Society Lecture, Camille Parmesan ACCESS news interview, Camille Parmesan (presented in sign language) video: "Global Warming: Impacts on Wildlife and Society," University of Texas Environmental Science...

...footprint not absolutely trodden all over the natural world. And if you look at it in those terms, if you throw away this ideal of wilderness, you throw away this archaic idea of wilderness, then you can start to understand the earth, the animals within it and start to learn to live alongside them. Earth A New Wild: How I got the commission It came about because PBS...

...carbon, hydrogen and oxygen atoms, and breathe in air which contains mostly nitrogen atoms. Box 3 The chemical elements Every object on Earth is made of chemical elements. Most elements were created in the nuclear furnaces of exploding stars in the early Universe, so you and the Earth around us are made literally from stardust. There are 109 named elements, of which 92...