1. What is an oasis? 2. What did scientists believe caused the Richat Structure when it was viewed from space by the first astronauts? What do scientist now believe created this landform?

Answer the zagros mountains, stretch across western iran and are located next to the khuzestan plain; answer( zagros mountains

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city.