Identify one secondary pollutant that is a component of photochemical smog and describe the following. (i) How the secondary pollutant forms
(ii) ONE human health effect of the pollutant
(iii) ONE environmental effect of the pollutant

Which measure of central tendency is used to calculate your grade-point average? a. standard deviation b. median c. mean d. z-score e. mode

Read this scenario: a group of immigrant farmworkers forms an interest group to argue for workers' rights in their state. they cannot afford an experienced lobbyist, however, and are unable to secure meetings with important lawmakers. which negative aspect of interest groups does the scenario illustrate? a. lacking power without funding b. supporting candidates who may not be the best choice for a position c. focusing only on group members' goals d. resorting to unethical tactics

Which of the following types of stars had the smallest initial mass? which of the following types of stars had the smallest initial mass?