Final answer:
Weather forecasts are not typically included in projections of future world population. These projections rely on birth rates, death rates, and immigration patterns, which demographers use to predict future population trends for planning purposes.
Step-by-step explanation:
Projections of future world population do not typically include d) Weather forecasts. While these projections heavily rely on factors such as birth rates, death rates, and immigration patterns, which are essential to formulating demographic trends and assessing the health of world demographics, weather forecasts are not usually accounted for in population prediction models. Demographers focus on fertility rates, life expectancy, and net immigration levels to construct these projections. These variables help governments and international organizations to plan economically, socially, and educationally.
While birth rates and family size are declining in most developing countries due to urbanization, demographic changes, including those driven by climate change, do impact the decision-making process concerning childbearing. However, direct weather events and patterns are more relevant to short-term displacement and impact assessments rather than long-term population growth or decline rates. Instead, factors such as labor availability, economic development, and overall quality of life are closely monitored and linked to population changes.