What is the most common greenhouse gas released by human activities? Nitrous oxide ◊ Carbon dioxide ◊ Methane ◊ Oxygen ◊ Greenhouse gases in the atmosphere are always bad for people and the environment. True ◊ ◊ In which of the following ways do people increase the amount of greenhouse gases in the atmosphere? By cutting down trees ◊ By driving cars ◊ By eating meat ◊ By burning coal to make electricity ◊ By all of the above ◊ How do greenhouse gases cause climate change? By absorbing the heat of the sun (ultraviolet rays) ◊ By absorbing the heat of sun reflected by the surface of the Earth (infrared rays) ◊ By making vapour in the atmosphere absorb heat ◊ By catching fire high up in the atmosphere ◊ In what year was it first suggested that human-made global warming might happen? 1827 ◊ 1896 ◊ 1924 ◊ 1967 ◊ 1979 ◊
What is the most common greenhouse gas released by human activities? ◊ Nitrous oxide ◊ Carbon dioxide ◊ Methane ◊ Oxygen Greenhouse gases in the atmosphere are always bad for people and the environment. ◊ True ◊ In which of the following ways do people increase the amount of greenhouse gases in the atmosphere? ◊ By cutting down trees ◊ By driving cars ◊ By eating meat ◊ By burning coal to make electricity ◊ By all of the above How do greenhouse gases cause climate change? ◊ By absorbing the heat of the sun (ultraviolet rays) ◊ By absorbing the heat of sun reflected by the surface of the Earth (infrared rays) ◊ By making vapour in the atmosphere absorb heat ◊ By catching fire high up in the atmosphere In what year was it first suggested that human-made global warming might happen? ◊ 1827 ◊ 1896 ◊ 1924 ◊ 1967 ◊ 1979