Describe what happens when a. two plates carrying oceanic cr ust collide, b. two plates carrying continental crust collide, and c. a plate carrying
oceanic crust collides with a plate carrying continental crust.

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. 

Canada and

Answeran adaptation

The fact that the earth goes through natural cycles for example the ice age some scientists belive that it is just another cycle