How does a leaf protect itself from unwanted intruders like bacteria from getting in and stopping important reactants from going out?

The cuticle layer on the outside of the leaf

Explanation:

i use alot when i f my girlfriend. i'm doing her in the bathroom at summer school. shes getting her tight jeans off and then we'll begin

explanation:

answer; a male inherits only one allele of the x-linked gene controlling hair color;