Need ! scientists often work on projects for a long time and fail to see sources of error in their research. which process allows an outside expert to look at the scientist’s project and point to sources of error? 1. direct funding 2.peer review 3.conclusive research 4.data collection

Many organizations release indexes used to measure the development of the world's countries. as we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. in your opinion, what are the three most important factors we can use to determine how developed a country might be? explain your answers in a few sentences.