Question

How does biological weathering occur?

Answer 1

Instructions:

• Define biological weathering.
• Explain the factors causing biological weathering.

Solution:

Biological weathering occurs when plants, trees, animals, and insects weaken the soil and rocks.

Plants grow on broken rocks, and as the roots of the plants grow bigger, they exert pressure, resulting in developing cracks and breaking the rocks.
Animals like rats, mice, rabbits, and other worms and insects burrow, loosen and weaken the soil.
Besides these, algae, moss, lichen, other flora etc., that grow in the rocks also help in weathering.