The worldwide use of cleaner energy sources could result in which of the following

Reduced greenhouse gases, revival of the ozone layer, cleaner air, healthier lives, slowing the icecaps melting... Just goes on and on. If none of those were an option, leave a comment

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.