HURRY PLEASE WILL GIVE BRAINLIEST Which of the following actions has caused desertification in Africa? i. Overgrazing of livestock ii. Farming the same land over and over iii. Practicing deforestation A. i. only B. ii. only C. i. and ii. only D. i., ii., and iii. Please select the best answer from the choices provided A B C D

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.