Question

Weathering and erosion of Earth's crust are primarily caused by
A) gravity B) volcanic activity C) evaporation D) sedimentation

Answer 1

Weathering and erosion of Earth's crust are primarily caused by "volcanic activity". The correct option is (B) volcanic activity.

Explanation:

1. The earth's surface is slowly broken down into small pieces by the action of weathering.
2. These broken down pieces are carried by natural environmental elements like wind, water, plants, ice, gravity, etc.
3. This process of movement of small particles is called erosion.
4. The lava present inside the volcanoes undergoes various chemical reactions, and plays a major and primary role in causing weathering and erosion.