Greenhouse Effect
The greenhouse effect is a characteristic of the earth's atmosphere, without the greenhouse effect the temperature would be much lower. The current imbalance is because this is increasing steadily. The main gases that cause the greenhouse effect are:
- Carbon dioxide (CO2)
- Methane (CH4)
- Nitrous oxide (N2O)
- CFC's (Chlorofluorocarbons).
Today the concentration of these gases is increasing rapidly. The concentration of carbon dioxide in the atmosphere increases due to his release by industry (factories), transport and deforestation (plants remove carbon dioxide from the atmosphere). The main evidence of global warming comes from measures of temperature, weather stations across the globe since 1860. The data show that the average increase in temperature was 0.5 ° C during the twentieth century. The largest increases were in two periods: 1910 to 1945 and 1976 to 2000.
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