Why did the oil industry damsge texas environment in its early years? a taking proper precsutions to prevent pollution was too expensive b people were not careful about preventing waste and contaminstion c a method for drilling without contamination had not yet been developed. d the market for oil had not yet been developed, so workers let a lot go to waste. me on this question

Known officially as a parliamentary democracy, but sovereign to the united kingdom, which canadian official is the head of canadian government? a) the president of canada b) the prime minister of canada c) the governor general of canada eliminate d) the royal canadian mounted police

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.

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?