An epidemiologist wants to evaluate the association between skin cancer incidence and the risk factors such as sun exposure. He decided to compare skin cancer rates in Costa Rica to skin cancer rates in Norway. He hypothesized that Costa Rica, being closer to the equator and receiving relatively larger amounts of UV radiation from sunlight exposure, would have significantly higher skin cancer incidence rates. This study design is:

"i know there may have been concerns that it may be too vague or too costly, or may lead endlessly to litigation. but i want to reassure you right now that my administration and the united states congress have carefully crafted this act. we've all been determined to ensure that it gives flexibility, particularly in terms of the timetable of implementation, and we've been committed to containing the costs that may be incurred. let the shameful wall of exclusion finally come tumbling down." president george h.w. bush, july 26, 1990 the act president bush speaks of was enacted to guarantee equal rights to people of all races. people of all sexes. eliminate people who are homeless. people with disabilities.

An economic term that describes happiness and its hard to measure in numbers is

Though most presidents have claimed affiliation with a christian church, the only roman catholic president has been a) abraham lincoln. b) john f. kennedy. c) george washington. d) franklin d. roosevelt.