What has caused the sahel to expand in recent years?

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.

The internet is controlled by: (select one): a. statutes and court cases in federal and state courts in the united states. b. the advanced research projects agency (arpa) and the u. s. department of defense. c. no single government or organization. d. google, yahoo, and the other search engines which have proprietary interest in the content thereon.

Alimitation on the president’s power to appoint ambassadors is that