Researchers believed that floral scent can sometimes improve a person’s learning ability. they set up an experiment in which each of 22 subjects completed sets of pencil-and-paper mazes. each subject wore a floral-scented mask and an unscented mask, in random order. the researchers measured the time to complete the sets of mazes. this experimental design is:

In a 2010 article “fact check: eastern u.s. earthquake risk” by chris mould, the author provides as evidence the following statement by the united states geological survey: “although earthquakes may be less frequent in the eastern u.s., … urban areas in the east could face bigger losses because the shaking would affect much larger areas than similar quakes in the west. in addition, most homes and buildings in the east are not designed to withstand earthquakes.”this statement directly relates to which of the following concepts? a. vulnerabilityb. hazardc. riskd. severity

Fertility and mortality rates are higher in more developed nations.

Which describes italy’s mediterranean climate? a. moist in the summer and dry in the winter b. mild and wet all year round c. cool in the summer and warm in the winter d. hot in the summer and mild in the winter