human factors of climate change

• What human activities are increasing greenhouse gas concentrations?

  Transport, energy, industry, and farming
• How do modern modes of transport contribute to greenhouse gases?

  They run on fossil fuels that release gases
• Why is sharing transport via public transport better for the planet?

  It reduces the number of cars burning fuel
• What are fossil fuels composed of?

  Coal, petrol, natural gas, and oil
• What is the impact of increasing car ownership in developing countries?

  More cars burn fossil fuels, increasing emissions
• What industrial process releases greenhouse gases?

  Cement production
• What gas is released when fossil fuels are burned?

  Carbon dioxide
• What is the source of carbon dioxide in cement production?

  Limestone, which contains lots of carbon
• What gas is produced from the decay of industrial waste in landfills?

  Methane
• How do cows contribute to greenhouse gas emissions?

  Their digestive systems produce methane
• What is methane classified as?

  A greenhouse gas
• What is another source of methane emissions in farming?

  Rice paddies
• What are the main human activities contributing to climate change?

  • Transport: fossil fuel consumption
  • Energy: burning fossil fuels
  • Industry: cement production and waste decay
  • Farming: methane emissions from livestock and rice
  • Deforestation: reduces carbon dioxide absorption
• How does deforestation affect carbon dioxide levels in the atmosphere?

  It reduces trees that remove carbon dioxide
• What do plants take in from the atmosphere?

  Carbon dioxide
• What are the components of farming that emit methane?

  1. Rice paddies
  2. The digestive systems of cows