True. we live in the troposphere.
I think the answer is photosystem
The defining abiotic factor of deserts is "A) the amount of rainfall" which is relatively very little in deserts. Desert climates can be found almost everywhere in the world.
The process is ocurring by steps, starting with depolarization.
1- Na+ permeability > K+ permeability
2- Vm (membrane potential) approaches ENa+ (quilibrium potential for potassium)
3- K+ permeability > Na+ permeability
4- Vm (membrane potential) approaches EK+ (quilibrium potential for potassium)