How much has the annual greenhouse gas index increased by percent from 1979 to 2017?
approximately 58%
approximately 42%
approximately 78%
D)
approximately 142%

The annual greenhouse gas index has increased approximately 42% from 1979 - 2017.

Ibelieve the answer is c. map projections.hope my answer has you : )

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.