Some of the natural causes of carbon dioxide in the atmosphere are.decomposition and animal matter, natural forest fires and volcanoes. The main human sources of CO2 come from the burning of fossil fuels and deforestation.
The main human sources of CO2 come from the burning of fossil fuels such as coal, oil and gas and from deforestation.
Like any other greenhouse gas, CO2 lets in radiation from the Sun, but prevents the infrared emitted by the Earth from being scattered into space.
It is a gas that occurs naturally and also as a by-product of biomass combustion, changes in land use and industrial processes through the use of fossil fuels.
The greenhouse effect is a phenomenon in which heat radiation from the planet's surface is absorbed by gases from the atmosphere, and is emitted again in all directions. Specifically, sunlight that is absorbed by the Earth's surface returns to the atmosphere in the form of heat.
The effects that scientists predicted in the past to emerge from global climate change are happening now: loss of sea ice, accelerating sea level rise, and more intense heat waves.