Geography

• how does the suns solar output affect the climate

  increases the temperature
• what are sun dark spots caused by

  magnetic storms
• how many year cycles are sun spots on

  11 years
• what are the two main greenhouse gases

  carbon dioxide and methane
• the greenhouse effect is the trapping of the suns rays under layers of gas which heats the earth
• what are the three sources of greenhouse gases

  burning fossil fuels

  agriculture

  deforestation
• why do people burn fossil fuels

  to generate energy