GEOGRAPHY AND HISTORY

  strength it is objective more reliable and valid use of statistical techniques facilitate sophisticated analysis of data the numerical data can be analysed in quick and easy way quantitative research are replicable quantitative experiment are useful for testing the result weaknesses quantitative research requires a large number of respondents. it is assumed that the larger the sample is the more accurate the results reflect the characteristics of research population it is costly this is due to the fact that it need more respondents as compared to qualitative research contextual factors to help interpret the results or to explain variation are usually ignored much information are difficult to gather using structured research instruments RELATED POSTS 9 CONDITIONS FAVOURING IRRIGATION FARMING IN EGYPT 5 CAUSES OF RURAL-RURAL MIGRATION IN KENYA 10 AIMS OF KILOMBERO VALLEY IRRIGATION SCHEME 4 FEATURES OF MAP STATEMENT SCALE 10 ADVANTAGES OF OIL PRODUCTION IN THE MIDDLE EAST 7 DISADV...

  Biomass refers to the total organic matter found on the earth’s surface in terms of plants and animals These plant/animal matter can be converted into energy by biological and thermochemical processes The main sources of biomass energy are agricultural wastes Animal waste such as cow dung and human waste is used to produce biogas a combustible gas generated by the fermentation of organic matter e.g. cow dung Biogas can be used as cooking gas and in refrigerators Advantages of biomass energy Inexhaustible as long as there is organic matter. Available throughout the world. Cheap because uses waste products. Production doesn’t require advanced technology Biogas gives twice as much heat as natural gas . Slurry left behind when biogas is being made can be used as fertilizer. Disadvantages of biomass energy Cannot be transported over longer distances. Contributes to global warming ( pollution ) if burnt directly. Requires large spaces for the construction of the bio-digesters  RE...