Final answer:
Developed countries have high GDP and PCI because of their abundant natural resources, efficient infrastructure and technology, and strong education and healthcare systems, which lead to greater economic output and a higher standard of living.
Step-by-step explanation:
Developed countries tend to have high Gross Domestic Product (GDP) and Per Capita Income (PCI) due to a variety of factors including abundant natural resources, efficient infrastructure and technology, and robust education and healthcare systems. These elements collectively contribute to higher productivity and economic output, which in turn produces a wealth of nutrition, shelter, health services, education, and consumer goods. A higher GDP combined with lower population growth rates results in a higher GDP per capita.
Abundant natural resources provide a foundation for industries and energy production, fueling economic growth. Efficient infrastructure facilitates trade and transportation, enhances productivity, and reduces costs. Robust education systems ensure a skilled workforce, while effective healthcare systems improve the overall health and lifespan of the population. Together, these aspects lead to sustainable economic development and a higher standard of living.