1) Which of the following is caused by humans? a) solar activity b) volcanic eruptions c) greenhouse effect 2) Where does the energy of the Earth come from? a) The moon b) The sun c) Jupiter 3) Which gas do cars release? a) ozone b) oxygen c) carbon dioxide 4) Which of these impact the global climate? a) greenhouse gases b) solar activity c) factories and industries d) all of them 5) Which biome is going to expand if global temperatures continue to rise? a) tundra b) rainforest c) icebergs

Global warming multiple options || adults elementary

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