How Do Humans How Do Humans Contribute to the Contribute to the

Greenhouse Effect?Greenhouse Effect?

How Do Humans Contribute How Do Humans Contribute to the Greenhouse Effect?to the Greenhouse Effect?

Burning natural gas, coal and oilBurning natural gas, coal and oil - -raises the level of carbon dioxide in the raises the level of carbon dioxide in the atmosphere. atmosphere.

Some farming practicesSome farming practices increases increases the levels of methane and nitrous oxide. the levels of methane and nitrous oxide.

DeforestationDeforestation also contributes to also contributes to global warming. global warming.

Industrial gasesIndustrial gases from factories from factories (sulphur dioxide, nitrogen dioxide)(sulphur dioxide, nitrogen dioxide)

The burning of fossil fuels

NST 2007/05/03GLOBAL WARMING: Final warning...

How Do Humans Contribute How Do Humans Contribute to the to the GreenhouseGreenhouse Effect? Effect?

Methane gas Emissions is the Methane gas Emissions is the Biggest Problem.Biggest Problem.