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

1)which is the following was characteristic of the british colonies but not the french or spanish religion a. presence of slavery b. religion conversion c. smuggling and piracy d. strict racial hierarchy 2)how did the columbia exchange affect europe? a diseases from the new world decimated the population of the european continent b new crops introduced to europe generated further interest in the new world c enslavement of american indians in europe changed cultural attitudes toward slavery d the items produced by american indians become objects of competition in europe