I think the one that best describes a cyclone is the first one (a dust storm rapidly changing weather in an area)
Carbohydrate atoms usually have how hydrogen atoms as compared to oxygen atoms >>>>
Americans breathe less pollution and face lower risks of premature death and other serious health effects. Environmental damage from air pollution is reduced. The value of Clean Air Act health benefits far exceeds the costs of reducing pollution. ... New plants and factories install modern pollution control technology.
Ions have a negative or positive charge because silver is metal. It is a cation (Ion with a positive charge).
Answer:
for a i think it is choice 2
for b i think it is the first choice
Explanation: