Radioactive dating works best with what type of rocks?

metamorphic rocks
fossilized rocks
sedimentary rocks
igneous rocks

The answer is the magnetosphere.

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. 

Idk tbh maybe u should google it