Question

which of the following is also known as the ecosphere as it is a sum of all the ecosystems?

a. atmosphere

b. hydrosphere

c. biosphere

d. cryosphere

Explanation:

To solve this, we analyze each option:

• Option a (Atmosphere): The layer of gases around Earth, not related to ecosystems.
• Option b (Hydrosphere): All water on Earth (liquid, vapor, ice), not ecosystems.
• Option c (Biosphere): Defined as the sum of all ecosystems, including all living organisms and their environments. It is also called the ecosphere.
• Option d (Cryosphere): Frozen water parts of Earth (ice caps, glaciers), not ecosystems.

Answer:

c. Biosphere