human

• human cause of climate change

  (increased car ownership)

  • Nitrous oxides from vehicle exhausts have increased due to increased vehicle use(1)
  • The number of licenced vehicles in the UK has increased every year since the end of WWII(1)
• human causes of climate change

  (deforestation)

  • Increased demand for land in developing countries has led to deforestation, particularly in the rainforests(1)
  • This causes less carbon dioxide to be recycled in photosynthesis(1)
  • Burning trees also increases carbon dioxide output(1)
• human causes of climate change

  (burning fossil fuels)

  • Due to an increased demand in electricity more carbon dioxide is being released from burning fossil fuels such as oil and gas(1)
  • Nitrous oxides from power stations have also increased due to increased carbon consumer/electrical goods use(1)
• human causes of climate change

  (increased demand for cattle)

  • Methane is more than 20x as effective in trapping heat than carbon dioxide(1)
  • The increasing demand for beef has resulted in more methane being created by belching cattle and from animal dung(1)
• human causes of climate change

  (increase in padi fields)

  • The increase in padi fields to feed rapidly growing populations in Asian countries has increased the amount of methane in the atmosphere(1)
  • Due to rising food demand the increased production of fertilisers also adds to the amount of nitrous oxide in the atmosphere(1)
• human causes of climate change

  (landfill sites)

  • Methane is released from landfills as waste decomposes and when drilling for natural gas(1)
  • Refrigerators and air-conditioning units which are not disposed of correctly release CFC's when the foam insulation inside them is shredded(1)