Which research question on the topic of air pollution is open-ended and complex? How many people believe that air pollution should be heavily regulated?
Which substances account for the greatest amount of air pollution?
How does air pollution affect human health in the United States?
Which counties in the United States experience the most air pollution?

Iwill give brainliest banquo. how goes the night, boy? fleance. the moon is down, i have not heard the clock. banquo. and she goes down at twelve. fleance: i take't, 'tis later, sir. banquo: hold, take my sword. there's husbandry in heaven, their candles are all out. take thee that too. a heavy summons lies like lead upon me, and yet i would not sleep: merciful powers, restrain in me the cursed thoughts that nature gives way to in repose! using context clues, what is the meaning of the word "candles" and what effect does that have on the play? the night is cloudy, so no one can really see what is happening. there are no stars, which could be considered candles in heaven, so heaven cannot see the sin happening on the earth below the moon is not illuminating the heavens, so everyone up there is asleep. the candles from the surrounding countryside are all out, so macbeth can carry out the murder