What are Viroids?
These were discovered by Diener. These are auto replicating RNA particles without any protein coat. Like virus they are obligate parasites. They have low molecular weight. They do not infect…
These were discovered by Diener. These are auto replicating RNA particles without any protein coat. Like virus they are obligate parasites. They have low molecular weight. They do not infect…
It is defined as an unguided and proliferative growth of cells which form tumor and invade other body systems. Some viral genes (herpes virus, papilloma virus, epsteinn barr virus and…
When the earth came into the existence the pollutants were very few. The amount of pollution has increased due to the increase in population and decrease in the natural resources.…
These are defined as the substances which cause pollution. They can be physical or chemical. They involve the smoke, gases and heat etc. They are mostly the waste product or…
The air pollutants are broadly divided into the particles and gases. The particles can be solid or liquid. The gases are the substances which are in the gas form at…
There are many factors which regulate the air pollution. It states that there should always be a distance between the industrial and residential area. The chimneys must be tall in…
The air pollution is also known as the atmospheric pollution. The W.H.O defined it as the presence of materials in the air which are harmful to the living beings when…
There are many sources of the water pollution and have a multiple effects on the body. It has main adverse effects in the villages. Nearly, half of our population suffers…
There are certain chemicals known as DDT which are not soluble in water. The water consists of 1 part of pesticide per billion parts of water. But they are soluble…
There are different degrees of the water impurity. It can be due to the different organisms which differ in the tolerance level of temperature, ph, oxygen, calcium and phosphorous content.…