by abhishek | Aug 21, 2020 | Environment
Air pollution is the presence of materials in the air in such concentration which are harmful to man and his environment. In other words, air pollution is the occurrence of foreign particles, gases and other pollutants in the air which have an adverse effect on human...
by abhishek | Aug 21, 2020 | Environment
Environmental pollution is defined as the undesirable change in physical, chemical and biological characters of air, water and soil. In other words, pollution is the release of those foreign substances in air, water or soil, which may kill or harm living organisms....
by abhishek | Aug 21, 2020 | Environment
We have already studied that there is a balance between biotic and abiotic factors of environment. But human beings are disturbing this balance of nature to fulfil their needs of food, clothing, housing, transport and industry. This environmental imbalance created by...
by abhishek | Aug 21, 2020 | Environment
Environment is that physical and biological world in which we live. Thus the environment consists of all those factors that affect the existence of an organism. The environment consists of two types of factors. These are: Biotic factors and Abiotic factors (or...
by abhishek | Aug 21, 2020 | Nervous System
Hormones are very important biochemicals produced in the body by specialized group of cells called glands. Chemically hormones are composed of proteins. These regulate the various metabolic reactions in the body. These are required only in small amount. Their low or...
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