| 11. | General physical weathering and chemical weathering can occur to make the rocks break like this.
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| 12. | Soil acidification resulting from soil respiration supports chemical weathering.
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| 13. | Only the outer few centimetres are affected by chemical weathering in a process called spheroidal weathering.
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| 14. | Chemical weathering : the principal agent is percolating rainwater charged with carbon dioxide from the atmosphere.
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| 15. | Plants contribute to chemical weathering through root exudates.
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| 16. | Due to chemical weathering, the coppered dome now appears to have a more brownish black color.
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| 17. | A special feature of the limestone, resulting from its chemical weathering to water, is its caustic nature.
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| 18. | Supergene enrichment occurs near the surface and involves water circulation with its resulting oxidation and chemical weathering.
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| 19. | The following is a simplified equation describing the consumption of CO 2 during chemical weathering of silicates:
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| 20. | Chemical weathering includes dissolution of matter composing a rock and precipitation in the form of another mineral.
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