A cell membrane has permeability, which means that the membrane:

transport proteins are specific and selective for the molecules they move, and they often use energy to catalyze passage.

Explanation:

I barley know what your trying to say

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.