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.
I wanna say the first answer - drought killed off plant life, leaving soil uncovered. dust storms can't happen unless there is a huge amount of land that is uncovered and has a lot of soil and dirt and dust.
