Multiple choice general knowledge math & puzzles

The Earth is surrounded by an insulating blanket of gases which protects it from the light and heat of the Sun. This insulating layer is called the...?

  1. Lithosphere

  2. Biosphere

  3. Hydrosphere

  4. Atmosphere

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atmosphere is the layer of gases surrounding Earth that protects life by absorbing ultraviolet radiation, regulating temperature through the greenhouse effect, and maintaining the pressure needed for liquid water to exist. The lithosphere is the rigid outer shell, biosphere encompasses all living things, and hydrosphere is all water on Earth.