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What greek scientist created a screw to move water for irrigation?

Abadger lives in oak grove forest. it is a female and it is four years old. which of the following animals could be considered a member of this badger's population? a. a two-year old male red fox living in oak grove forest b. a ten-year-old female skunk living in pine warden forest c. a four-year-old female badger living in a zoo d. a ten-year-old male badger living in oak grove forest

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?