Final answer:
RNI values are high in developing countries due to various factors including healthcare access limitations and high infant mortality rates. Fertility rates significantly impact population dynamics, with developing nations maintaining higher rates to offset infant mortality. These health indicators reflect the challenges in healthcare and contribute to overall population growth patterns.
Step-by-step explanation:
Developing countries often experience higher Rate of Natural Increase (RNI) values due to factors such as limited infrastructure, access to healthcare, and unregulated fertility levels. Typically, these countries face numerous health challenges, such as infectious diseases, high infant mortality rates, scarcity of medical personnel, and inadequate water and sewer systems, which can lead to lower average life spans and higher rates of infant mortality.The fertility rate, defined as the number of children born to a woman over her lifetime, plays a significant role in population dynamics. For instance, in developing countries, a high fertility rate might be maintained to compensate for high infant mortality rates, leading to family sizes that are greater than the average number of surviving children. Fertility rates, when combined with mortality rates, allow researchers to understand the overall growth within a population.Poor health and education conditions further exacerbate the challenges faced by developing countries, as they often have fewer healthcare providers relative to their populations. These disparities in maternal and infant mortality rates are strong indicators of the overall health of a population, affecting both the quality of human capital and the Rate of Natural Increase. As countries develop and urbanize, however, there tends to be a shift towards lower fertility and mortality rates, which affects the RNI and overall population growth.