Killer whales have a low birth rate
Following are predominant causes of low birth rate in Canada.Increased index of aging population, lower teen fertility rate, use of effective measures of contraception, easier access to medical services, less involvement in religious activities, broken families.
Healthy citizens can lead to a low death rate.
Low Thyroid hormone can causes hair loss, sluggishness and low metabolic rate.
There are many causes to low heart rate in unborn babies. One of the causes could be not enough oxygen to the baby.
Crack.
Demographic transition
1200
high
Babies with a low birth rate normally have problems with their internal organs not being fully developed. A child may have a low birth rate is due to a mother's nutrition, activity level and over all health that caused the child to have an early birth.
broken bones
Lack of education