What is greenhouse effectThe greenhouse effect occurs when certain gases in the atmosphere (the air around the Earth) trap infrared rays. This effect makes the planet warmer, like a greenhouse keeps its inside temperature warmer.
The greenhouse effect is caused by greenhouse gases; the most important greenhouse gasses in Earth's atmosphere are: water vapor, carbon dioxide, and methane. When there is more greenhouse gas in the air, the air holds more heat. This is why more greenhouse gases cause global warming.
The greenhouse effect is normal. It is important for life on Earth. Without the greenhouse effect, the Earth's average temperature would be around -18 degrees Celsius. Because of the greenhouse effect, the Earth's actual average temperature is 14 degrees Celsius.
The problem is that recently, the greenhouse effect has become stronger. Scientists believe this is because humans have been using large amounts of fossil fuels, which release carbon dioxide when they are burned. Since carbon dioxide is a greenhouse gas, it has caused the planet to warm over the past 150 years.
What are the consequences for thatmaybe the biggest problem about this is that the polar ice caps are melting, this cause the sea levels to rise, and low lying regions may be flooded another problem is that the eco-systems will change and some plant or animals may go instinct.some scientists predict that there will be more natural catastrophes like hurricanes, heavy rain and drought.
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