1 For subsidence caused by sudden collapse of the ground to form sinkholes, several measures can be taken. 2  First, geologists can make maps of areas known to be underlain by rocks like limestone, gypsum, or salt, that are susceptible to dissolution by fluids.
The Navajos used bows and arrows, spears, clubs, tomahawks, knives and sticks among their tools and weapons. Beyond these, they also used bolas and... The Navajos used bows and arrows, spears, clubs, tomahawks, knives and sticks among their tools and weapons. Beyond these, they also used bolas and blowguns. The Navajos employed the use of several tools and weapons:Bows and arrows were used by Native Americans to defend themselves, and sometimes for fishing. They also used them for hunting animals like bison.When fighting against European explorers, Native Americans used spears.
History >> Native Americans for Kids. The Native American Navajo tribe is one of the largest tribes of American Indians. They lived in the Southwest in areas that are today Arizona, New Mexico, Colorado, and Utah. The name Navajo comes from the Spanish who called them the Apaches of Navajo. They called themselves Dine or the People. What type of homes did the Navajo live in? The Navajo lived in hogans. A hogan was a domed shaped house with a wood frame and walls made out of clay. The door of the hogan always faced east so they could see the sun rise. What did the Navajo eat? Navajo Weaver by Pennington, William M. The Navajo were farmers who grew the three main crops that many Native Americans grew: corn, beans, and squash. After the Spanish arrived in the 1600s, the Navajo began to farm sheep and goats as well, with sheep becoming a major source of meat. They also hunted animals for food like deer and rabbits.