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...chemistry, geology and basic mathematics that underpin our understanding of the polar world demonstrate knowledge and understanding of the processes and interactions (physical, biological, chemical and geological) which shape the polar environment at different temporal and spatial scales express concepts in an objective and factually correct way make sense of information...

...chemistry of CFCs and their substitutes, but Box 1 should help you to identify their potential for environmental damage. Read through it now then answer the following question. What possible environmental problems could arise from using the two transitional compounds HFC 134a and HCFC141 b? Answer Although you have not been given any specific information about HCFC141 b...

...chemistry is very simple, the biology is very complex. I don't think that the biologists have quite got their act together to confidently predict what would be the consequences of this. In terms of human welfare, ocean acidification may not be the biggest problem that we face. I mean truth is that we simply do not care a whole lot about other species, we simply do not...