when the death rate for old people and the infant mortality rate are high , with no migration , there will be in the population a higher number of

When the death rate for old people and the infant mortality rate are high, it means that a large number of old people and babies are dying. If there is no migration, this would result in a higher number of younger people in the population. This is because when the infant mortality rate is high, a large number of babies are dying which reduces the number of children in the population. Similarly, when the death rate for old people is high, it reduces the number of old people in the population. Therefore, the remaining population would mostly consist of younger people.