Is it true that the plasma membrane is a single phospholipid layer that supports and protects a cell and controls what enters and leaves it

What is the process of pulling apart an n2 molecule nevermind i got it

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases

Why do mountaineers become breathless as they reach high altitudes