Multiple choice general knowledge science & technology

The band of gases surrounding the earth is called the

  1. photosphere

  2. chromosphere

  3. atmosphere

  4. None
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The atmosphere is the layer of gases surrounding Earth, held in place by gravity. It's primarily nitrogen (78%) and oxygen (21%), with trace amounts of other gases. Photosphere and chromosphere are layers of the sun, not Earth. The atmosphere protects life by absorbing UV radiation, regulating temperature, and providing the air we breathe.

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