Posts Tagged ‘nitrogen and oxygen’

The Greenhouse Effect

greenhouse_effect

The Earth’s atmosphere is composed of many gases. The most abundant are nitrogen and oxygen (the latter is the need to breathe). The rest, less than one hundredth part, are gases called “greenhouse.” We can not see or smell, but they are there. Some of them are carbon dioxide, methane and nitrogen dioxide.
In small concentrations of greenhouse gases are vital to our survival. When sunlight reaches the Earth, some of this energy is reflected in the clouds, the rest passes through the atmosphere and reaches the ground. Thanks to this energy, for example, plants can grow and develop. Read the rest of this entry »