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The Proportions Of Different Gases In The Atmosphere (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'The Proportions Of Different Gases In The Atmosphere' from the broader topic Chemistry Of The Atmosphere. The test is geared towards the AQA exam board style syllabus.
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Which practice will help reduce increases in atmospheric CO2?
Which gas in the troposphere can be directly harmful to human health at high concentrations and is produced by incomplete combustion of fossil fuels?
Which of the following is NOT a greenhouse gas?
The ozone layer in the stratosphere is important because it:
Which noble gas is the most abundant component of air after nitrogen and oxygen?
Which gas is the largest proportion of dry air but is largely unreactive and does not support combustion?
Approximately what percentage of the atmosphere is oxygen?
What human activity directly increases atmospheric methane levels?
Which of the following is a direct effect of increased global atmospheric CO2 and temperature?
Which gas is commonly measured in parts per million (ppm) when discussing atmospheric concentration?
Why does increasing atmospheric carbon dioxide lead to enhanced greenhouse effect?