How do many nomads make their living in the Sahara? They live in the cities where they can sell their goods. They live in one place so they can care for their herds. They travel to find water and food for their herds. They create large farms in the desert to grow food.

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.

Ithink it's c selection but i don't really know.