In the mid-1950s, a researcher in los angeles was able to create smog by setting up a large, clear chamber and using it to expose auto exhaust to sunlight. he was demonstrating
a) the cause of acidic deposition
b) point source pollution
c) non-point source pollution
d) the cause of ozone depletion
e) photochemical reactions

Correct answer is (E) Photochemical reactions

Explanation:

Photochemical smog is made in the presence of sunlight

By the late 1800s, huge ranches had developed in Texas. One factor that led to their growth was changes in the railroads. In the 1860s, most rail lines ended north of Texas, so cattle had to be driven to them. In the 1880s, rail lines were extended into the state.

Explanation: