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

Enlightenment thinkers most contributed to the development of whichpolitical idea? a. religious leaders should play the largest role in establishing asociety's laws. b. democratic governments have the responsibility to protect humanrights. c. criminals must be punished harshly if a society is to maintainorder. d. written constitutions place unnecessary restrictions ongovernments' powers.

The maya got water from which of the following sources?

Which application of a new technology can be attributed to an invention of thomas edison?