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Above 100,000 feet altitude (20 miles).
Air pressure falls of as one gains altitude. At high altitude the air pressure is very low but it does not "falls drastically", which implies a sudden change.
water
AIR NAVAGATION .. US 1-1-4(VOR) VERY HIGH FREQUENCY OMNI-RANGEVOR Class=High Altitude 1,000-14,500 feet Range 40 nautical milesVOR Class=High Altitude 14,500-60,000 feet Range 100 nautical milesVOR Class=High Altitude 18,000-45,000 feet Range 130 nautical miles
Because of the high altitude.
The Incas favorite vegetable was potato. It could be grown at high altitude, which was useful in their home in the Andes. They also liked corn.
The Incas were primarily agriculturalists, cultivating crops like maize, potatoes, and quinoa. They also engaged in mining for precious metals such as gold and silver. Additionally, they were skilled weavers and traded goods within their empire.
Since the altitude was to high for seep, lambs, cows, etc. The Inca herded alpacas. sadly I do forget if they had horses/donkeys. Hope this was helpful
The Incas used stone to build terraces, known as "andenes," on the steep slopes of mountains to create flat areas for farming. These terraces prevented erosion, helped retain water, and provided microclimates for crops to thrive in different altitudes. The use of stone also allowed for better irrigation systems, such as canals and aqueducts, to bring water to the crops.
High altitude
The Incas developed terraces primarily for agricultural purposes. The terraces provided flat surfaces for planting crops on the steep Andean mountainsides, which helped prevent erosion, optimize water usage, and increase food production in their mountainous terrain.
The Inca built a system to bring the water
They had to build terraces and irrigation systems.
the altitude is high, around 2194m.
The incas used terrace farming at different elevations
The Incas used terrace farming to build wide, flat steps on steep hillsides. These terraces helped to prevent erosion, retain water, and create more arable land for crops. They also used irrigation systems to channel water efficiently across the terraces.
Altitude Trekking is only used for high mountains like in Himalaya, India. Altitude basically represents the height from the sea level, as u go high, you will trek on more high altitude mountains.