Earth's surface was covered with countless springs, streams, rivers, and lakes of every size. The land could not suffer a widespread shortage of water, because without rivers, lakes, seas, and other water sources, it would become barren.
Rain falling from the sky was nothing more than water. Under The Sun's scorching heat, water dispersed into tiny particles and rose into the sky on warm air, until it encountered cold air, formed clouds, condensed into raindrops, and fell.
It was like a tool. This did not merely refer to humans using water for irrigation and transport. Food spoilage was generally caused by two factors: the growth and reproduction of microorganisms, and various deterioration reactions that could spoil food. When free water decreased, microbial reproduction was inhibited. Adding some salt while curing ham could turn fresh meat into salted meat, extending its shelf life.
Some said life was like a burning flame, with the heart as the flame's breeding ground. Blood drew vitality from it, while the lungs absorbed the fuel from the air that allowed people to burn. This did not merely refer to oxygen.
Animals obtained information by smelling urine and other substances left behind by their own kind. Musk was originally used by male deer to mark territory and court mates. Female deer were attracted by that scent, while other animals were attracted by the scent of females.
Since the vast majority of information humans acquired came through sight, with smell accounting for only a small proportion, dogs, by comparison, had poorer vision than humans and relied more heavily on smell for cognition. Their sense of smell was also more sensitive than that of humans.
Untreated musk smelled awful, as did the scents on other people. Perfume and fragrances did more than conceal those smells. To a certain extent,