Sometimes it is difficult to generalize the results of a study to the population because of the problem.

Why do drivers have difficulty seeing side traffic at t-intersections in rural areas?

The biggest component / ingredient of summer time smog is

Which two words in this excerpt from the count of monte cristo can be used as synonyms to determine the meaning of the word grotto? dantès entered the second grotto. the second grotto was lower and more gloomy than the first; the air that could only enter by the newly formed opening had the mephitic smell dantès was surprised not to find in the outer cavern. he waited in order to allow pure air to displace the foul atmosphere, and then went on.