What describes the movement of individuals out of a population

Migration is the movement of individual organisms into, or out of, a population. ... Immigration is the movement of individuals into a population from other areas. This increases the population size and growth rate. Emigration is the movement of individuals out of a population.

(bro she is ancient)

j < 14

j is jakes age

since jake is younger it makes his age less than his sisters

(if you meant she is 14)