The desert, located in northern africa, is the largest desert in the world.

a. namib
b. kalahari
c. sahara
d. gobi

C. Sahara

The Sahara Desert is the largest desert in the world, located in northern Africa.

C. Sahara is the largest and most humid desert in the world.

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. 

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.