Why is April 14, 1935 called Black Sunday, according to “Black Sunday: The Storm That Gave Us the Dust Bowl”? A. because it was the hottest day on record B. because it was the start of the Great Depression C. because it was the day Congress held hearings about the Dust Bowl D. because it was the day a huge dust storm swept across the Great Plains

answer; genetics;

it's

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.

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.