Will upvote if :
becasue of their shape when seen from the ground, tornados are sometimes
v clouds
tube clouds
funnel clouds
wedge clouds

answer; i believe the answer is hydraulic action;

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.