Set No - 1 Subject Code: R13106/R13 I B. Tech I Semester Regular Examinations Feb./Mar. - 2014 ENVIRONMENTAL STUDIES (Common to CE‚ ME‚ CSE‚ PCE‚ IT‚ Chem E‚ Aero E‚ AME‚ Min E‚ PE‚ Metal E) Max. Marks: 70 Question Paper Consists of Part-A and Part-B Answering the question in Part-A is Compulsory‚ Three Questions should be answered from Part-B ***** What are the causes of floods and droughts? What are ecological pyramids? Write about different types of pyramids Write about different values of
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WHAT IS NOISE POLLUTION? What is noise Pollution? Sound is essential to our daily lives‚ but noise is not. Noise is generally used as an unwanted sound‚ or sound which produces unpleasant effects and discomfort on the ears. Sound becomes unwanted when it either interferes with normal activities such as sleeping‚ conversation‚ or disrupts or diminishes one’s quality of life. Not all noise can be called noise pollution. If it does not happen reqularly‚ it may be termed as ’Nuisance’
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contaminated water. The World Health Organization estimates that 80% of all sickness and disease in developing countries is due to unsafe water. As water pollution is one of the most widespread problems and it has deadly effects‚ I chose this topic. Water pollution is the contamination of water bodies (e.g. lakes‚ rivers‚ oceans and groundwater). Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds. The project
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BIODIVERSITY AND ENVIRONMENTAL GOVERNANCE: ROLE OF MASS MEDIA UNIYAL‚ SHALINI. M.K.P.P.G. COLLEGE‚ DEHRADUN As we celebrate 2010 as the International Year of Biodiversity‚ a sad realization dawns that even amongst the educated the term biodiversity suffers from a lack of absolute clarity. Biodiversity is the degree of variation of life forms within a given ecosystem or an entire planet. It is a measure of the health of biological systems Industrialization has caused a major dent in biodiversity
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Professor Ouwehand English 110/120 MW 2:20 Research Paper 16 April 2012 Essay III How Plastic Pollution is Out of Control Many individuals underestimate the amount of plastic we use each day. According to the article “Plastic Bags Wars”‚ “the world consumes 1 million plastic shopping bags every minute”. Plastic bags‚ along with many other types of plastics‚ have become a leading source of pollution worldwide (Doucette). Captain Charles Moore‚ founder of the Algalita foundation states that we
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Air Pollution To understand pollution of air‚ some knowledge of the atmosphere is required. Atmosphere is a layer consisting of a few gases surrounding the planet earth and is vital for the survival of life on earth. The atmosphere protects earth from abrupt temperature fluctuations from the powerful ultra violet radiation coming from the sun. The atmosphere is made up of nitrogen 78%‚oxygen 21%‚argon 0.9%‚carbon dioxideo0.03% and small amount of trace gases ‚helium ‚neon‚ krypton‚ xenon‚ hydrogen
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RIVER POLLUTION River is very important because it can provide clean water and can act as a main source of protein to human beings. Most of the drinking water consumed by the people of the world originates from the river. If the river has been polluted‚ then the tarnished river water needs to be filtered through a series of intricate and money-consuming process. The picture above clearly shows that the pollution of water happened because of the ignorant act of dumping rubbish and toxic
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CELL STRUCTURE CELL THEORY: Structural and functional unit of all living things New cells arise from already existing cells Cells contain information that instructs growth. This information can be passed onto new cells. MICROSCOPES: There are two main types of microscopes: Light and Electron Electron Micrographs- shown in colour LIGHT ELECTRON Uses beam of light Magnification = x1500 Resolution = 200 nm Wide range of specimens can be used Samples are fairly quick + easy to prepare
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smoke billowing from a factory chimney‚ flyash generated by thermal power plants‚ and speeding cars causing dust to rise from the roads. Natural phenomena such as the eruption of a volcano and even someone smoking a cigarette can also cause air pollution. | | |The gaseous composition of unpolluted air | |
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The Water Pollution on Our Earth If we watch news now‚ sometimes they talk about our environment. They say that our environment is very worrying and needs the attention from us. One of our environments is water. Water is a vital necessity for us to fulfill the daily needs such as cooking‚ bathing‚ washing and the others else. We usually hear that some big city have a problem with their water‚ some area in many country occur drought‚ and many people compete to get clean water. We often ask in our
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