Human Impact on Greenhouse Gases:

Greenhouse gases in the atmosphere maintain temperatures on Earth high enough to support life, however human activities have increased their amounts. For example:

FOSSIL FUEL COMBUSTION

• Coal, crude oil and natural gas are all fossil fuels that humans use for transport and electricity generation.
• The COMBUSTION of these fuels released the ‘LOCKED UP’ Carbon into the atmosphere as CARBON DIOXIDE.

AGRICULTURE:

• Farm animals such as COWS release METHANE into the atmosphere due to their digestive processes.

DEFORESTATION:

• Cutting down trees has meant there are fewer trees that PHOTOSYNTHESISE. This means that LESS Carbon Dioxide is TAKEN IN from the atmosphere.