How are profits and competition important to market economy?

When firms compete with each other, consumers get the best possible prices, quantity, and quality of goods and services. Competition can lead companies to invent lower-cost manufacturing processes, which can increase their profits and help them compete and then, pass those savings on to the consumer.

Explanation:

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

answer; (regions)