The upper portion of the Earth is known as:

Question

Accepted Answer

1. The lithosphere is the rigid outer shell of the Earth, comprising the crust and the uppermost mantle — i.e., the solid "upper portion" of the planet.

2. Troposphere, stratosphere, and mesosphere are layers of the atmosphere (gaseous envelope) above the Earth's surface, not the solid upper portion.

3. Therefore the correct choice is (3) Lithosphere.

FINAL_ANSWER: c

Answer

Answer

Answer