Which of these factors cause a movement along the aggregate demand curve? choose one or more: a. a foreign country discovers an oil field. with the country's increased wealth, its people purchase more products. b. the government increases spending. c. a sudden increase in the price level affects a person whose income does not adjust with the inflation rate. d. an increase in the price level of domestic products causes more people to purchase foreign products.

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.