2. How has the concentration of CO2 in the atmosphere changed over the past 400,000 years, according to measurements of CO2 in Antarctic ice
cores?

The beach , myrtle beach sc

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. 

There is no map could you put up a picture of the map and i will try to .