Online teaching with Kubbu
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Global WarmingAuthor:Description: Keywords: earth ecology, carbon dioxide, pollution, green house effect, disaster, , online teaching Content: Quiz: 1. What is the Earth%27s average temperature? A) about 5 °C B) about -3 °C C) about 15 °C D) about 23 °C 2. The greenhouse effect is the same thing as global warming. A) TRUE B) FALSE 3. Air consists mainly of: A) nitrogen B) oxygen C) carbon dioxide D) methane 4. How much carbon dioxide is in Earth’s atmosphere today? A) 20%25 or greater B) 10%25 to 20%25 C) 1%25 to 10%25 D) less than 1%25 |