This is the specific type of contamination, or poisoning of lakes, rivers, oceans, and other bodies by harmful compounds such as raw sewage and industrial chemicals

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 the rise to power and reign of alexander most affect greece

What is the role of communication within groups of people with different backgrounds?