Tuesday, July 29, 2014
Sunday, July 27, 2014
Thursday, July 24, 2014
The erosion of the ozone layer
The ozone hole is a thinning or losing parts of the ozone layer above the south pole .
You should know that the scientists have noticed that there was the erosion of the ozone layer above the South Pole , Since 1978 , And it is known as the ozone hole .
Monday, July 21, 2014
You should know that the ozone layer is located at the height from 20 to 40 km above the sea level , And it is located in the lower part of the stratosphere layer , As it is the first layer of the atmospheric envelope which contains a suitable amount of oxygen gas , and it also faces the ultraviolet radiations that emitted from the Sun .
Friday, July 18, 2014
The atmospheric envelope of the Earth
You should know that the Earth is surrounded by a gaseous envelope known as the atmospheric air or the atmospheric envelope which is a gaseous envelope rotating with the Earth around its axis , and it extends about 1000 km above the sea level .
Thursday, July 17, 2014
Tuesday, July 15, 2014
|The types of the soil are the sand soil , the silt soil and the clay soil .|