Explain how the increasing use of fossil fuels and changes in agriculture may have contributed to global changes in temperature.

The burning of fossil fuels releases CO2 into the atmosphere. This CO2 adds to the greenhouse effect as it blocks more heat from leaving the atmosphere, therefore increasing the temperature of the earth. Methane is also released from livestock in agriculture which is another greenhouse gas. The increased use of soy farming in Brazil contributes to global changes in temperatures as deforestation increases the amount of CO2 in the atmosphere and transportation to countries like China increases the use of fossil fuels.