1. There are three types of weathering of rocks: physical, chemical and biological.

    There are three types of weathering of rocks: physical, chemical and biological.

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  2. Weathering is pulverization of rocks to form fine particles.

    Weathering is pulverization of rocks to form fine particles.

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  3. Paedogenesis is the process of formation of soil from upper rocky crust of Earth.

    Paedogenesis is the process of formation of soil from upper rocky crust of Earth.

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  4. (i) Reduction in fertility of soil; (ii) Desertification.

    (i) Reduction in fertility of soil;
    (ii) Desertification.

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  5. Contamination of soil with solid wastes, chemicals and excess of fertilizers and pesticides thus reducing its fertility and quality, is called soil pollution.

    Contamination of soil with solid wastes, chemicals and excess of fertilizers and pesticides thus reducing its fertility and quality, is called soil pollution.

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