Question

list any three human activities which would lead to an increase in the carbon dioxide content of air

Answer 1

1. deforestation
2. burning of fossil fuels
3. industrialisation

Answer 2

1.using automobile and using old vehicle they produce carbon monoxide which is very poisonous gas for human.2.using air conditioner to produce CFC gas which make holes in ozone.3.by industry chemicals substance burning and produce harm full gases