Climate Change (Global Warming-3)

The concentration of carbon dioxide into the atmosphere has increased by 25% since the industrial revolution. Carbon dioxide is increasing at a rate of about 0.4% per year and is responsible for about half of the current increases in the greenhouse effect. The concentration
of methane has more than doubled during the last three centuries. Agricultural sources particularly rice cultivation and animal husbandry has probably been the most significant contributors to historical increase in concentrations. But there is the potential for rapid growth in emissions from landfills, coal seems, permafrost, natural gas explorations and pipeline leakage, and biomass burning associated with forest clearings in the future.