this makes it clear that this time around humans are the cause, mainly by our co2 emissions.
this makes it clear that this time around humans are the cause, mainly by our co2 emissions.
air pollution:22
pollutants emitted into the atmosphere by human activity include: carbon dioxide (co 2) – because of its role as a greenhouse gas it has been described as "the leading pollutant" and "the worst climate pollutant".