Natural Hazards A natural disaster is a natural event, such as an earthquake, flood, or hurricane, which negatively affects society, either through damage to property or through loss of life. A natural hazard is a disaster that has not yet occurred. Natural events are often referred to as natural hazards when referring to the general phenomenon, but they are called...

Biomedical Waste The wastes generated in hospitals, nursing homes, pathological laboratories, and research institutions are referred to as biomedical waste. These comprise used needles, syringes, blood, blood bags, urine bags, glucose bottles, bandages, chemicals, and body parts. Biomedical wastes are one of the sources of spreading diseases such as Acquired Immunodeficiency...

Air Pollution Depending upon the generation of different air pollutants, they are grouped as Primary Pollutants Secondary Pollutants Primary Pollutants A primary pollutant can be defined as a harmful chemical that directly enters the air as a result of either man made or natural activities. There are 5 major primary air pollutants which together contribute more...

Noise Pollution Noise has been well defined as “unwanted sounds” which is being “dumped” into the atmosphere to disturb the unwilling ears. It adversely affects our physiological to disturb the unwilling ears. It adversely affects our physiological and mental health. Measurement of Sound Sensitivity of human ear is measured clinically with the audiometer....

Renowned Environmentalists of India i. Salim Ali Salim Ali was an Indian ornithologist and naturalist; known as the “birdman of India”, Salim Ali was among the first Indians to conduct systematic bird surveys across India. He was instrumental in creating the Bharatpur Bird Sanctuary (Keoladeo National Park) and prevents the destruction of what is now the Silent...

Soil Pollution Soil Pollution Unfavourable alteration of soil by addition or removal of substances and factors which decrease soil productivity, quality of plants and ground water is called soil pollution. Sources of Soil Pollution Soil pollution mainly results from the following sources 1. Industrial Wastes 2. Urban Wastes 3. Radioactive Pollutants 4. Agricultural...

Water Pollution The term ‘water pollution’ is referred to the addition to water of an excess of material or energy like heat that is harmful to human beings, animals and many other aquatic forms of life. According to Water (Prevention and Control of Pollution) Act, 1974 of India, the pollution of water means ‘such contamination of water or such alteration of...

Environment and its Components Definitions Environment is a multi-dimensional systems of complex inter-relationships in a continuing stage of change. It is in totality of all social, biological and physical or chemical individually as well as collectively that compose the nature and man made surroundings. Environment is a holistic view of the world as it functions...

THE ENVIRONMENT (PROTECTION) ACT, 1986 (Central Act 29 OF 1986) [23rd May, 1986] An Act to provide for the protection and improvement of environment and for matters connected there with: WHEREAS the decisions were taken at the United Nations Conference on the Human Environment held at Stockholm in June, 1972, in which India participated, to take appropriate steps...

Which among the following States has the highest number of seats in Lok Sabha? (a) Maharashtra (b) West Bengal (c) Tamil Nadu (d) Madhya Pradesh Correct answer is option (a) Maharashtra Explanation Uttar Pradesh as maximum number of seats (80) in Lok Sabha. At second position is Maharashra with 47 seats. Followed by West Bengal with 42 seats.     Economies...