Answer: Water on earth is not distributed evenly; and the amount of SAFE DRINKING WATER is not accessible evenly.
Further, a large portion of the earth's water is ocean water (about 70% of the Earth itself is ocean water, which is not readily available for human consumption (or for consumption of other animals —or plants, for that matter; and not all people live near the ocean (from which seawater can be "converted" into potable water) or near places where potable water can be obtained.
Answer:
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.
The region that was hit the hardest by the bubonic plague in the 1300's was the Mediterranean region.
Big portions of Europe had big losses when this disease came to the European soil, but the Mediterranean region, on European, Asian, and African soil, was hit the hardest and had the biggest losses in human lives. The body didn't had a defense system for this disease nor do the medics of the period had a solution for it, so once someone got it, it meant that the person is destined to die in a matter of days.
60% change from 500 to 800