Why is it difficult if not impossible for towns and cities to exist much higher than 5 km in elevation?
A) because solar radiation kills most life above this elevation
B) because temperatures are too cold
C) because low air pressure leads to not enough oxygen for survival
D) because humans have never explored high elevation regions of the globe

Question

Quizplus · Accepted Answer

Low air pressure at high elevations leads to a decreased amount of oxygen, making it difficult for humans to survive without supplemental oxygen. This is known as altitude sickness and can cause symptoms such as headaches, shortness of breath, and fatigue. Additionally, the lack of oxygen also makes it difficult for crops to grow and animals to survive, limiting the resources available to sustain human life. Solar radiation and cold temperatures may also be factors in high elevation environments, but the primary challenge for human habitation is the lack of oxygen.

Why Is It Difficult If Not Impossible for Towns and Cities