Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate.

The population will later, cease to exist.

Since the population is experiencing (about) the same rates of immigration and emigration, these 2 factors will not change anything.

A low birth rate and a high death rate means that more people are dying than being born.

Therefore the population will decrease until there is nobody and it will cease to exist.

In the air and in the lower fre ah water

Sorry  i don't understand can you rephrase that