W–curve theory suggests that a. cultural adjustment is a long-term process of ups and downs.
b. people may experience cultural adjustment upon returning home.
c. sojourners experience excitement, shock, and then adaptation to "host" cultures.
d. cultural adjustment is a growth process.

buying socks and buying shoes are independent events.

answer; ///first they would cross the atlantic ocean, and end up either in europe or africa; good luck

permafrost layer, it exists beneath a layer of soil, rock or sediment.

answer; /// decreasing responsiveness to a stimulus to which one is repeatedly exposed;