Ben has had problems with the pipes in his apartment. First, he had a clog in his bathroom sink, and then two months later, his garbage disposal in the kitchen sink clogged. Ben's superintendant told him he was not adequately flushing the debris from his pipes. She suggested that he run the water a little longer and visualize the debris (be it carrot peelings or toothpaste) traveling through the pipes all the way out to the sewer connection in the street. Using this technique, Ben has had no more clogs. The superintendant's suggestion involved

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.

How did dynasties end and how did new ones start?

In 1914, alabama produced 1.7 million bales of cotton, but three years later produced only 515,000, bales. meanwhile, in georgia, 5.2 million acres of land was dedicated for cotton production in 1914, but by 1923 there were just 2.6 million acres used for growing cotton. all of this was the result of the work of a tiny insect: the boll weevil. alabama and georgia first felt the effects of the boll weevil at different times. what would account for this difference in timing? a) the infestation moved from west to east. b) the infestation moved from east to west. c) georgia had better ways to deal with the problem. d) alabama was further from the insect's point of origin.