Niles and Marsha adopted an infant boy (a U. S. citizen). They paid $17,000 in 2019 for adoption-related expenses. The adoption was finalized in early 2020. Marsha received $3,500 of employer-provided adoption benefits. For question (a), assume that any adoption credit is not limited by modified AGI or by the amount of tax liability. Required: What amount of adoption credit, if any, can Niles and Marsha take in 2020

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.