scientists agree that the burning of fossil fuels like oil and coal causes greenhouse gases to escape into the air and that these gases are causing most of the warming. another cause is deforestation (cutting down trees). trees soak up carbon dioxide, one of the greenhouse gases, from the air.
sun heat, factories, industry, the consumption of fuel used for vehicles and industry, etc.
pollution
chemicals, fumes
factories and cars pollute the air, lack of education, streams and seas are polluted with oil from tankers, destruction of trees.
pollution
almost all industries and their products are causing global warming.