Multiple choice

The atmosphere exerts enormous pressure on us. But we do not feel it because

  1. we are used to it

  2. the bones area of our body is very small

  3. the surface area of our head is very small

  4. our blood exerts pressure slightly more than that of the atmosphere
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The human body maintains internal pressure through blood and other fluids. This internal pressure is roughly equal to or slightly higher than the external atmospheric pressure, which prevents us from being crushed.

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