Noise Pollution Noise pollution is unwanted, unpleasant, loud disturbing sound that has a harmful effect on human beings as well as animals. The frequency of sound is measured in …
Soil Pollution Soil pollution is the alteration in soil due to the removal or addition of substances, which decreases the productivity and quality of plants. Agrochemicals, industrial wastes, mining …
Water pollution Water pollution is the contamination of water due to the addition of substances (i.e.,inorganic, organic, biological, radiological,etc.,) making it unfit for human use and growth of aquatic …
Air pollution Air pollution is the addition of foreign particles, gases and other pollutants into the air which has an adverse effect on human beings, animals, vegetation, etc. It …
Environmental Pollutants Environmental pollutants are substances, chemicals or any other thing which change the natural balance of the environment and thus cause pollution. Pollutants stimulate, initiate or terminate the …
Ex- Situ Conservation of Biodiversity Ex-Situ conservation means ‘out of site conservation’. It is the conservation of rare plants/ animals in places outside their natural habitat. Examples of ex-situ …
Conservation of Biodiversity Conservation of biodiversity is protection and management of biodiversity so as to maintain it at its optimum level and derive sustainable benefits for the present as …
Threats to Biodiversity Biodiversity is under serious threat due to human activities. The range of animal and plant life in an ecosystem are being destroyed which is leading to …
Growth of Human Population MCQ (Multiple Choice Questions and Answers) Question l: Human population 1.5 million years ago was (A) 1 million (B) 5 million (C) 10 million (D) …
Technology for Medical Application MCQ (Multiple Choice Questions and Answers) Question 1: Which of the following for the first time recorded the human electro-cardiogram? (A) Hans Berger (B) William …