Palladia specializes in the production of beef and produces beef more efficiently than any other country. It buys wheat, which it produces less efficiently than beef, from Rhodia, even though it produces wheat more efficiently than Rhodia. Which of the following theories of international trade supports Palladia's decision to buy wheat from Rhodia?A. The Samuelson critiqueB. MercantilismC. Ricardo's theory of comparative advantageD. Adam Smith's theory of absolute advantageE. The Leontief paradox

Scientists developed the first successful human cell culture in vitro (grown in a lab) in the 1950s by removing cancer cells from a woman. this concept has allowed modern scientists to successfully grow organs. which of the following answers  bestdetermines why there was success?   neurons send a signal to the cell to multiply.a large blood supply to the cell allows enough nutrients for growth.cells are the basic unit of life and thus can regenerate if in a controlled environment.cells cannot reproduce on their own, and the scientist manipulates them to grow.