Photochemical response, a synthetic response started by the retention of vitality as light. The result of atoms' retaining light is the production of transient energized states whose concoction and physical properties contrast extraordinarily from the first molecules. Photochemical brown haze is the synthetic response of daylight, nitrogen oxides and unstable natural mixes in the environment, which leaves airborne particles and ground-level ozone.
Clouds form when moist, warm rising air cools and expands in the atmosphere. The water vapor in the air condenses to form tiny water droplets which combine to form clouds.
The answer is false. I took the quiz for history, 3.04 8th grade. If you look at the map that was attached in the lesson with the color key, New-Orleans-Jacksonville is a urban area. Don't believe the "verified" answer! They're wrong.