How are people able to live in the arid regions outside of the nile valley? question options: salt is removed from seawater to create the water supply. the oases and aquifers provide water. water from the nile river is piped to other areas. the rain-shadow effect causes heavy rains.

Two gymnastics teams are intense rivals. the first team has started recruiting new gymnasts from different cities and even foreign countries in an effort to build a stronger team. after learning this, the second team begins its own recruitment campaign to find even better gymnasts. over a period of months, each team recruits dozens of players, each time trying to find a better recruit than its rival's most recent addition. which idea from the cold war is most similar to this scenario?