Question

Presence of which of the following makes the Earth a unique planet?

• A. Water
• B. Atmosphere
• C. Gravitational force
• D. All of the above

Answer 1

The correct option is D. All of the above

• The distinguishing features of Earth: abundant liquid water (and the temperature required for that), a protective atmosphere, a geological system neither overactive nor dead.
• Earth gravitationally interacts with other objects in space, especially the Sun and the moon.