NOTE: You may be asked where the greenhouses originate from. Well, its not in the spec but it was in the 2015 paper so just to be safe I have included the info (its in red).
Greenhouse gases are bad as they trap heat from the sun in the earths atmosphere. Examples of greenhouse gases include...
- Water vapour
- Carbon dioxide (deforestation, industrial processes, car exhausts)
- Nitrous oxide (fertilisers, vehicle engines, natural release from bacteria)
- Methane (rotting plants, rice growing, cattle rearing)
- CFCs (NOTE: CFCS are man-made chemicals, they are basically not produced anymore but some still are and are leaking from old products that contain them)
A blog covering and explaining the Edexcel IGCSE Biology specification for the 2016 summer exams. If you are doing just double science, you do not need to learn the stuff for paper two, if you are doing triple you will need to learn all (GOOD LUCK!) I have separated the papers to make files easier to find. Hope it helps :)
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