Compare the number of low income infants/toddlers to the number of high income infants/toddlers. What factor(s) listed above MIGHT NOT contribute to the

I. Increased immigration.
II. There is overall better nutrition
III. People have more access to better health care,
IV. Females have access to educational resources
V. Parental confidence in infant survival has increased.
VI. Epidemics spread rapidly through the population.