Give a geographical reason for each of the following:

(i) Biological weathering is also known as organic weathering.

(ii) Vegetation prevents disintegration of rocks.

(iii) Chemical and biological weathering is negligible in polar climates.

(i) Biological weathering is also known as organic weathering because it is caused by the action of living organisms such as plants, animals, and microorganisms.

(ii) Vegetation prevents the disintegration of rocks because its roots bind the soil and cover the rock surface, reducing the rocks' exposure to weathering agents.

(iii) Chemical and biological weathering are negligible in polar climates because water remains frozen for most of the year, limiting chemical reactions, and the extreme cold supports very little plant and animal life.