Research the demise of the passenger pigeon. Today, we realize that certain species are rare and can go extinct. Describe how the extinction of this organism helped shape current views on conservation and human impact on the environment. You don't need to provide a history of what happened to the passenger pigeon, but you need to provide specifics as to how we stopped the extinction of other organisms because of this

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.