Usually the cause of a high birth rate is because there are a lot of teen mothers who don't have access to birth control. Cause of a high death rate would be because of poverty and disease.
There are lots of causes, in third world countries, most female prefer less children when they are educated!, High and Low birth rates is not merely a demographic matter, they are tied to humans perception about reality, Social institution --religion, culture and tradition--gender preference...
The cause of high birth rate is a high number of couples having unprotected intercourse.
The cause of low birth rate is a high number of couples having protected intercourse or
no intercourse.
The cause of a high death rate is a high number of people's hearts stop pumping for them.
The cause of a low death rate is a high number of people have hearts still pumping.
Seesee
The cause of low birth rate is a high number of couples having protected intercourse or
no intercourse.
The cause of a high death rate is a high number of people's hearts stop pumping for them.
The cause of a low death rate is a high number of people have hearts still pumping.
Seesee