Blog 8
My opinion on: Hihi, i hope you are well, this is the last blog The "greenhouse effect" is the warming that occurs when certain gases in the Earth's atmosphere retain heat. These gases let light through but hold heat like the glass walls of a greenhouse. First, sunlight shines on the Earth's surface, where it is absorbed, and then returns to the atmosphere as heat. In the atmosphere, greenhouse gases retain some of this heat and the rest escapes into space. The more greenhouse gases, the more heat is retained. Scientists have known about the greenhouse effect since 1824, when Joseph Fourier calculated that the Earth would be colder if there were no atmosphere. This greenhouse effect is what makes the Earth's climate suitable for life. Greenhouse gas (GHG) levels have risen and fallen during Earth's history but have been fairly constant over the past several thousand years. Global average temperatures have also remained fairly constant over this time period un...