Is it true that the size of a population increases if the number of individuals added to the population is equal to the number of individuals leaving the population

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

The activity of the modern sample is 1.10 bq . how long does that measurement take?