1) What is global warming? a) The present-day temperatures on Earth. b) The weather during the summer. c) The increase in the average temperatures on Earth. 2) Which biome is going to expand if global temperatures increase? a) Rainforest b) Tundra c) Temperate Forest d) Desert e) grasslands 3) Which one impacts the global climate? a) Volcanic eruptions b) Solar activity c) Greenhouse gases d) Natural fluctuations of the planet e) All of them 4) The gas that the cars release a) Carbon dioxide b) Water vapor c) Oxygen d) Ozone e) Chlorofluorocarbons 5) Where does the energy of the Earth come from? a) Fossil fuels b) The sun c) The spin of the Earth d) The friction of the Earth's atmosphere e) The moon 6) Which of the following causes of global warming can be affected by human behaviour? a) Volcanic eruptions b) Solar activity c) Greenhouse gases d) Natural fluctuations of the planet 7) What determines your 'carbon footprint'? a) The trash you produce in one year b) The type of food you eat c) The dioxide you release when you do your activities d) The size of shoe you wear 8) An example of a renewable energy source a) Gasoline b) Solar power c) Coal d) Fossil fuels

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