Question

define weathering and humus​

Answer 1

The process by which huge rocks are broken down into small particles by the action of sun's heat, wind, rain and flowing river water, etc, is called weathering. The organic matter formed by the decomposition of dead plants and animals by the micro-organisms (like certain bacteria and fungi) is called humus.

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Answer 2

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$\sf{\underline{\overline{\pink{Weathering :}}}}$

• $\underline\bold{Weathering}$ is a term which describes the general process by which rocks are broken down at the Earth's surface into such things as sediments, clays, soils and substances that are dissolved in water.

• The process of weathering typically begins when the earth's crust is uplifted by tectonic forces.

$\sf{\underline{\overline{\pink{Humus :}}}}$

• $\underline\bold{Humus}$ can be simply defined as the fertile and the important constituent of the soil.

• Humus are the dark, organic material present on top of the soil.

• This organic matter mainly constitutes of dead and decaying animal substances, dried leaves, twigs, grasses, vegetables, microbes and other nutrients.

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