In the riddle of the rosetta stone, how does the author best support his claim that thomas young was someone who "laid a solid groundwork for others"?

D: by providing images Young deciphers and facts about his accomplishments

i told you before its c

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.