Is Zero Young Population Growth , because the cost of their lifes increase a lot

The number of births must be the same as the number of deaths in a population for a growth rate to be zero.

On a graph of population growth the size of the population when the growth rate decreases to zero represents an area's carrying capacity.

Zero population growth is a sign of a low birthrate. Other factors that affect population growth include a stagnant Death Rate and a low mortality age.

Stagnation or zero growth as long as they aren't losing money.