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1. What is the force behind weathering by Exfoliation? Where is it most likely to occur?
2. What is the force behind weathering by Thermal Expansion and Contraction? Where is it most likely to occur?
3. What is the force behind weathering by Crystal Growth? Where is it most likely to occur?
4. What is the force behind weathering by Tree Roots? Where is it most likely to occur?
5. What is the force behind weathering by Abrasion? Where is it most likely to occur? What else do you think might abrade rock besides sediments?

Questions from Nature