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Which classes of wave is descriptive of sound? Longitudinal waves or Transverse waves?
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Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation
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The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false
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When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity
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Which of the following explains why a tree is often used as a model to represent the principle of common descent
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Which classes of wave is descriptive of sound? Longitudinal waves or Transverse waves?...
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