#C6.3a
interpret evidence for how it is thought the atmosphere was originally formed
knowledge of how the composition of the atmosphere has changed over time
#C6.3b
describe how it is thought an oxygen-rich atmosphere developed over time
#C6.3c
describe the greenhouse effect in terms of the interaction of radiation with matter within the atmosphere
#C6.3d
evaluate the evidence for additional anthropogenic (human activity) causes of climate change and describe the uncertainties in the evidence base
the correlation between change in atmospheric carbon dioxide concentration and the consumption of fossil fuels
#C6.3e
describe the potential effects of increased levels of carbon dioxide and methane on the Earth’s climate and how these effects may be mitigated
consideration of scale, risk and environmental implications
#C6.3f
describe the major sources of carbon monoxide, sulfur dioxide, oxides of nitrogen and particulates in the atmosphere and explain the problems caused by increased amounts of these substances
#C6.3g
describe the principal methods for increasing the availability of potable water in terms of the separation techniques used
ease of treatment of waste, ground and salt water