The panel established by, the World Meteorological Organization (WMO) and the United Nations Environment Programmed (UNEP) in 1988 released its fourth assessment report on climate change, according to the report over the past 250 years 90 percent of this planet has been warmed by human activities.
Living beings are the major factor in contributing the climatic changes. The human contributions results into the burning of fossil fuels, which emits carbon dioxide gas in huge quantity. The climate gets affected due to the Greenhouse gases and aero¬sols as they alter external solar radiation and leaving infrared radiation that are considered amongst Earth’s energy balance. From the beginning of industrial age
(1750), the influence of human actions on the global climate has been is very destructive. (Intergovernmental panel on climate change IPCC, 2007)
The industrial revolution has brought burning of wood, charcoal, coal, oil and gas. The industrial behavior has raised extraordinary carbon dioxide levels to 99 parts per million in the last 150 years. The report also disclosed that human activities produced greenhouse gases that include carbon dioxide, methane and nitrous oxide which have raised Earth's temperatures over the precedent 50 years.
Cynthia Rosenzweig, a scientist at the NASA, said that Human beings are the participants of all such activities that lead to climatic changes by emitting greenhouse gases, and the world is influencing on physical and biological systems attributable at the global level.
