Eric erikson proposes eight stages of psychosocial development, in which each critical period represents a challengefor that time. which stage(s) is (are) correctly matched with the age in early childhood and its challenge?

  b.

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

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )

answer; the above statement is (true);