Climate change

Climate change is a change in the statistical distribution of weather patterns when that change lasts for an extended period of time (i.e., decades to millions of years). Climate change may refer to a change in average weather conditions, or in the time variation of weather within the context of longer-term average conditions. Climate change is caused by factors such as biotic processes, variations in solar radiation received by Earth, plate tectonics, and volcanic eruptions. There is no general agreement in scientific, media or policy documents as to the precise term to be used to refer to it, either "global warming" or "climate change" may be used.

There are several theories as to what its causes