All of the following led to a decline in air quality in Texas cities EXCEPT:
a.
An increase in medical research facilities.
b.
An increase in urbanization and industrialization.
c.
The increased use and popularity of commercial aviation.
d.
The increased use and popularity of the automobile.

Please select the best answer from the choices provided

A
B
C
D

A

Explanation:

all others require multiple and more resources daily

the correct answer is a) egypt and china.

egypt and china are two of the world’s oldest civilizations known by man. both ancient empires have left a great historic and cultural legacy to the world through archeology. both civilzations developed complex social relations, had deep religious beliefs, had dominion of agriculture and left writing records to understand their customs and culture.

among the requirements to consider a civilization, we find urbanization, writing records, a place of residence, agriculture methods, technological specialization, means of transportation, currency, population density, social stratification, and political integration.

multiple choice? can i see the answers?