介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:26.07]The last reading.
[12:30.65]Global Warming
[12:33.17]Global warming is the increase in the average temperature of the Earth's surface air and oceans.
[12:41.35]Climate change is any major change in measures of climate,
[12:46.26]such as temperature, r...

介绍： 版权归原作所有，仅供此学习，若有侵权请告知删除。
[12:26.07]The last reading.
[12:30.65]Global Warming
[12:33.17]Global warming is the increase in the average temperature of the Earth's surface air and oceans.
[12:41.35]Climate change is any major change in measures of climate,
[12:46.26]such as temperature, rainfall and wind.
[12:49.75]Scientists have debated about global warming for years.
[12:55.18]Many have different opinions about the extent to which greenhouse gases are responsible for it.
[13:03.32]Greenhouse gases, such as carbon dioxide,
[13:07.63]are produced by factories, power stations and vehicles.
[13:12.21]They trap heat in the Earth's atmosphere.
[13:15.53]Research shows the level of carbon dioxide gas in the Earth's atmosphere
[13:21.71]has increased by more than 30% in the last 250 years.
[13:27.35]Carbon dioxide is produced by burning oil and coal.
[13:32.61]An increase in global temperatures has led to other problems.
[13:38.08]Scientists have observed a rise in sea levels and a melting of ice in the Earth's Polar areas.
[13:46.90]Scientists also believe that global warming is affecting endangered plants and animals,
[13:55.67]sea life and the seasonal activities of organisms.