Pregunta | Respuesta |
Animals | Burrowing animals (e.g. rabbits) can burrow into a crack in the rock, making it bigger & splitting the rock. |
Plants | Plant roots can grow in cracks. As they grow bigger, the roots push open the cracks and make them deeper & wider. The rock may fall away. |
Humans | People walk on footpaths, and they become damaged because shoes wear them away. |
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