Substances that cause pollution of air are called as air- pollutants or atmospheric pollutants. These are fine Primary Pollutants that contribute more than 90 percent of global air pollution. These fine pollutants are carbon monoxide (CO); Nitrogen oxides (NOx); Sulphur oxides (Sox) and particulates. These pollutants can be put into two broad categories A. Gaseous Pollutants, and B. Particulates.
On June 26, 1945 fifty-one; nations representing 80% of the world’s population approved and signed a charter for the establishment of a world body of nations – the United Nations Organisation (UNO); at San Francisco.
Pakad or Ficus virens is one significant tree of the Panchvati group. Panchvati is the group of five sacred or important trees worshipped and adorned in the Hindu culture since ancient time.
Pumpkin has been included in the healthful vegetables. It has been an important part of our food since centuries. But, now it has become a vegetable of less preference.
Sparrow or the House Sparrow taxonomically belongs to the family Passeridae. It is found in most parts of the world.
The scientists of Punjab Agricultural University (PAU), Ludhiana worked for ten years to develop a new High Yielding Variety of onion entitled POH-1.
Deepawali is the time of functions. This is the time when we meet with our friends and relatives. The atmosphere of love and recreation remains all around at this time. But we never think that we forget certain other important things at this time.
The application of scientific knowledge for practical purposes, especially in industry, is called as technology.
A group of individuals of a particular species occupying a particular area at specific time is called as population.
An activity that serves as one’s regular source of livelihood is called as occupation.
