Upon completion of this lesson, the students should be able to:
The ozone layer shields the earth from the harmful ultraviolet radiation. The ozone layer not only absorbs ultraviolet radiation but also the radiation of wavelength less than 3x10-7 m. This note is detailed explanation of ozone layer, its formation, depletion and measures to conserve it.
The artificial house which is made by glass or plastic inside which the temperature will be more than the outer environmental temperature is called greenhouse. Artificial greenhouse provides controlled environment for plants. This note explains what is greenhouse, its advantages and disadvantages.
Those gases which are released from the chemicals of various industries are called industrial gases. Commonly it contains carbon-di-oxide, carbon-mono-oxides mono-oxides of nitrogen. This note explores the effect of industrial gases on environment.