Question

Rocks, soil, mountains and the hot interior of Earth together form the

A volcano erupts and throws huge amounts of ash into the air. The ash blocks sunlight, and crops nearby grow poorly. Which order shows how the spheres were affected?

Assertion (A): Polar bears depend on the cryosphere for their survival. Reason (R): About 71% of Earth's surface is covered with water.

A hillside forest is cleared to build a highway. Explain how this single change can affect at least three different spheres of the Earth system.