As the sun rises and the air temperature increases, what typically happens to the relative humidity? (assume the dewpoint temperature remains constant.) select one:
a. it will increase.
b. it will decrease.
c. it will stay the same.
d. it will oscillate between extremely high and low values.
e. relative humidity has no relationship to temperature.

What is the most effective approach the government can take to keep the air clean? create and enforce regulations that limit fossil fuel burning by industries use funds to understand why smoke and mold are causes of outdoor air pollutants educate people about the threats to outdoor clean air from visible forms of air pollution modify regulations under the clean air act by including expensive options to reduce air pollution