Large parts of the Kalahari desert in Africa are covered in? A. Cactuses and shrubs. B. Leaves and sand. C. Scrub and small bushes. D. Oases and scrub. PLZ DONT GUESS

It's D. Oases and scrub

Explanation:

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the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.