Answer:
Temperatures across 98 percent of Earth's surface were hotter at the end of the 20th century than at any time in the previous 2,000 years. Such nearly universal warming, occurring in lockstep across the planet, is unique to this current era, scientists say
Explanation:
Answer: Asia, And Europe .
Explanation:
<em>The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat.</em> Gases in the atmosphere such as CO2, water vapor, methane, nitrous oxide, ozone and some artificial chemicals such as chlorofluorocarbons absorb and re-radiate the sun's energy maintaining the Earth's temperature at around 33 degrees Celcius, this happens especially with infrared light that wants to go back to space. This infrared heat spreads back to the land and oceans. This absorption does not happen with visible light, the radiation at 400-800nm easily passes through the atmosphere.
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