What are some known teratogens, and what kind of damage can they do to the developing fetus?

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.

Why do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?

Using your time line, your analysis of images from the library of congress’s website, and your textbook, write a letter of 3-5 paragraphs for a time capsule to be opened in 200 years that describes the characteristics of texas from the time of the civil war to the late 1800s. be sure to include information on texas’s government, economy, and people. be sure to use specific evidence to support your writing. cite your textbook using specific page numbers, as well as any images you describe. edit your work for proper grammar, punctuation, and spelling before submitting. hurry im short on time