Current climate of the world is in crisis heavily. Global warming in particular . Several reasons Major cause of global warming caused by human action , regardless of the environmental impact in the long run , especially the invasion of deforestation . Burning natural occurrence of fire, toxic fumes , coal , oil and gas industry. Smoke and automobile exhaust These pollutants severely affect the ecology of life on land and sea . Including the impact on public health as well . By the action of most humans.