Question

Which of the following processes cause mechanical weathering?

A) a plant growth
B) Freezing and thawing water
C) Animal actions like burrowing the ground
D) all of the above

Answer 1

D) all of the above

Answer 2

Answer: d

Explanation: Mechanical (physical) weathering is the breakdown of rock into smaller particles due to such factors as freezing and thawing, release of pressure, water absorption, salt crystal formation, landmass uplift, expansion and contraction from the sun or fire, plant root growth, actions of animals, abrasion, or other means that do not directly affect the rock's chemistry.