Which is false:

a. three desert surfaces= hamada, reg, erg
b. exotic= ephemeral
c. Sahel= desertification
d. wind transport= creep, saltation, suspension
e. dunes= barchan, transverse, seif

B. . exotic= ephemeral

Explanation:

An organism is considered as 'Exotic' if the organisms exist in an environment outside of their natural habitat (for examples, polar bear that is imported to a zoo in california.)

Ephemeral organisms on the other hand, exist naturally on ecosystem such as wetlands or lake. These organism do not exist all year long, but they did not live outside their natural habitat.

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.

answer; language that can promote racial stereotypes;