_ theory proposes that countries pass through a consistent sequence of population patterns linked to the degree of development in the society and end with a situation in which the birth rates and death rates are both relatively low.

Demographic transition                          

Explanation:

Demographic transition theory: The term "demographic transition theory" is described as a theory that tends to analyze on the changes in the death rate and the birth rate and is consequently dependent on the populations' growth rate. However, along with the "economic development," the tendency of death rate and the birth rate is considered as different.

In the question above, the given statement represents the demographic transition theory.

speed

explanation:

they produces sugar..

hope this , question was a little open ended