Which of these was a result of the Kansas- Nebraska act

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper

The provisions of subpart d, of the hhs regulations, additional protections for children involved as subjects in research apply to: all research involving childrenall research that is > minimal riskall research funded by any federal agencyall research funded by hhs

Carbon tetrachloride is a toxic liquid. a carbon tetrachloride molecule has one atom of carbon and four atoms of chlorine. what is its chemical formula?