Final answer:
The projected population increase to 9.9 billion by 2050 will have significant human geographic implications. These include increased competition for resources, strain on infrastructure and urban areas, and environmental impacts.
Step-by-step explanation:
The human geographic implications of the projected population increase to 9.9 billion by 2050 are significant. One implication is the increased competition for resources, such as food, water, and energy. As the population grows, more resources will be needed to sustain and support the larger population.
Another implication is the strain on infrastructure and urban areas. As more people inhabit different regions, there will be a greater demand for housing, transportation, and other amenities. This can lead to overcrowding, traffic congestion, and challenges in providing adequate public services.
Lastly, the population growth will also impact the environment. Increased human activity can lead to deforestation, pollution, and habitat destruction, which in turn can affect ecosystems and biodiversity.