Human activities, particularly the combustion of fossil fuels, are altering the climate system.

Human-driven changes in land use and land cover such as deforestation, urbanization, and shifts in vegetation patterns also alter the climate, resulting in changes to the reflectivity of the Earth surface (albedo), emissions from burning forests, urban heat island effects and changes in the natural water cycle.

Because the primary cause of recent global climate change is human, the solutions are also within the human domain.

Because we understand the causes of climate change, that paves the way for effective solutions to be developed and deployed.

1)industrial activity2)agricultural activity

Global warmingis a long-term rise in the average temperature of theEarth'sclimate system;an aspect ofclimate changeshown bytemperature measurementsand by multiple effects of the warming.[2][3]Though earlier geological periods also experienced episodes of warming,[4]the term commonly refers to the observed and continuing increase in average air and ocean temperatures since 1900 caused mainly by emissions ofgreenhouse gases(GHGs) in themodern industrial economy.[5]In the modern context the termsglobal warmingandclimate changeare commonly used interchangeably,[6]butclimate changeincludes bothglobal warmingand its effects, such as changes to precipitation and impacts that differ by region.[7][8]Many of the observed changes in climate since the 1950s are unprecedented in theinstrumental temperature record, and inhistoricalandpaleoclimateproxy recordsof climate change over thousands to millions of years.[9]