
Global warming quiz1. What is the most common greenhouse gas emitted from human activities?less than 0.1%25, 0.1%25 to 1%25 crossword maker , 1%25 to 2%25, more than 2%25, 2. What is the Earth%27s average temperature? about 5 °C, about -3 °C, about 15 °C online learning games , about 23 °C, 3. The greenhouse effect is the same thing as global warming. True, False, , 4. Carbon dioxide forms # of the Earth%27s atmosphere. nitrogen, oxygen online quizzes , carbon dioxide, methane, |