The French league had different values at different times: 10 000, 12 000, 13 200 and 14 400 French feet, about 3.25 km to about 4.68 km. It was used for a while together with the metric system but it is not used now. The nautical league was three nautical miles.
Why does precipitation fall mainly on the windward side of a mountain? When humid winds blow from the oceans toward mountains they must rise up to pass over the mountains. The rising warm air cools when it rises and its water vapor condenses, forming clouds rain or snow falls on the windward side of the mountain. microclimate Climate within a small area that differs significantly from the climate of the surrounding area
Energy from the greenhouse gases warms the lower atmosphere and the earth's surface. Without the warming caused by these greenhouse gases, the earth would be a cold and mostly lifeless planet. The loss of moisture from the landscape and the resulting semiarid or arid conditions on the leeward side of high mountains. The winds blowing in from the ocean are forced upward when they come to the mountains and leave most of their moisture on the windward side. Once they get over the mountain, they need more moisture and absorb it from the leeward side (side that gets no wind), thus creating the inland desert.