question_answer 26)

  One of the following factors does not lead to soil formation in nature (a) the sun                          (b) water                             (c) wind                                (d) polythene bags

Answer:

  (d) Soil is formed form the rocks undergoing the following process Weathering breakdown of bigger rocks into smaller mineral particles Paedogenesis Decomposition by bacteria. Polythene bags are non-biodegradable substances. These cannot be broken down by paedogenesis or weathering (physical, chemical or biological), therefore they do not contribute in soil formation. Besides these are the major non- degradable pollutants of the soil.