Question

What makes life possible on Earth?

• A. It is at a perfect distance from the Sun.
• B. The ozone layer protects the Earth from ultraviolet rays.
• C. It is very close to Mars.
• D. Greenhouse gases keep the Earth warm.

Answer 1

Answer: (A), (B), (D)

The correct options are
A It is at a perfect distance from the Sun.
B The ozone layer protects the Earth from ultraviolet rays.
D Greenhouse gases keep the Earth warm.

Earth is a habitable planet for the following reasons:

• It is at a perfect distance from the Sun.
• It has a combination of hydrosphere, atmosphere, and lithosphere that allows life to exist in the biosphere.
• The ozone layer protects Earth from ultraviolet rays.
• The greenhouse gases in the Earth's atmosphere keep it warm.