Global warming is on of the most concerning problems that we are nowadays confronting. The earth’s climate is a very complicated system. Now it is widely recognised that human activity is having a negative effect on it. The pollution which results from the use of oil and coal in industry, as well as the increased of use private cars, is causing significant changes in temperature in many parts of the world. These changes often have a knock-on effect on other aspects of the climate, leading to things like extreme weather conditions, rising sea levels and the extinction of many species, as a result of climate change.
A much more serious problem is how to prevent the situation from getting even worse. This depends on how quickly the number of population grows. Although many countries have agreed to try to limit the population they "create", much more things have to be done.
If we do not do anything, the temperatures are set to rise by about 0,2% per decade, during the 21st century. Such a rate of warming is bigger than anything that has occurred over the last ten thousand years. “During the entire 20th century, the average global temperature increased by about 0.6 degrees Celsius (slightly more than 1 degree Fahrenheit).”
A much more serious problem is how to prevent the situation from getting even worse. This depends on how quickly the number of population grows. Although many countries have agreed to try to limit the population they "create", much more things have to be done.
If we do not do anything, the temperatures are set to rise by about 0,2% per decade, during the 21st century. Such a rate of warming is bigger than anything that has occurred over the last ten thousand years. “During the entire 20th century, the average global temperature increased by about 0.6 degrees Celsius (slightly more than 1 degree Fahrenheit).”
sources:
Ontem e hoje, física 10 - porto editora
Sustentabilidade na terra, ciências naturais - areal editores
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