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How can animals cause weathering of rocks?

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Ways in which animals cause weathering of rocks are;

  • Burrowing animals lead to mechanical weathering by breaking up the rocks through digging.
  • Hooved animals like cattle exert pressure on rocks as they walk on them leading to breaking and disintegration.
  • Animals excrete chemical substances that may come into contact with the rocks and lead to chemical weathering.
  • Decaying animal remains give off organic fluids that may react with the rocks and lead to chemical weathering.

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