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Effects on Weather - Air pollutants
Dust, smoke and other suspended particulate matter reduce visibility. Fly-ash also affects visibility by intercepting and scattering solar radiation. Reduction in visibility results in economic burden because air traffic, shipping, harbour operation and road traffic are adversely affected. Certain aerosols such as sulphuric acid mist, ammonium, sulphate mist and water vapours influence the vertical temperature profile in the atmosphere which affects thermal mixing, dispersal and the build up of pollutants. Aerosols also affect cloud formation and weather.
Nature defences against viral infections 1. Interferons - In 1957 Issue and Lindenmann discovered that vertebrate cells infected with viruses, produce a diffusible antiv
What type of respiration does earthworm has ? In many complex animals, the cells of internal organs are distant from the outside environment; respiratory systems provide the passag
If dimples may be considered a single-gene dominant trait, and 64% of the population features dimples, calculate the frequencies of heterozygotes and both types of homozygotes, ass
Explain about Osseointegration Osseointegration is regarded as the process of direct bone apposition on implant surfaces where the bone in contact with the implant later underg
Biological Oxygen Demand - Effect on Water Bodies Addition of biodegradable matter exerts demand on oxygen of the water body. The demand of oxygen is directly related to incre
Q. What is Parkinson's disease? The Parkinson's disease is a degenerative disease of the nervous system in which the major manifestations are progressive motor disturbances, li
Development Projects - Deforestation The use of science and technology to support the ever- increasing needs of man is termed as development. In the recent years, the human po
Segments of Environment: The environment is not a simple distribution of gases but is highly complex and structured. It comprises of four segments: Lithosphere
Determine the significance of Mesoglea. The jellylike layer found between endodermal and ectodermal cell layers of diploblastic organisms. It acts as a type of cement holding t
Define the Food and Nutrition Security? In the previous section, we learnt about the trends in production of food grains in the country and their relationship to population gro
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