Class VIII

With passage of time transported sediments become
  1. smoother
  2. smaller
  3. rounder
  4. all of them
Water in freezing form may break rocks in to pieces by force of
  1. reduction
  2. evaporation
  3. expansion
  4. condensation
Dead remains of animals and plants also accumulate to form
  1. coal
  2. natural oil
  3. diamond
  4. sedimentary layer
Weathering of rocks is affected by
  1. rain
  2. temperature
  3. both a and b
  4. erosion
Rocks are made up of
  1. soil
  2. core
  3. mantle
  4. crust
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