Could someone help me

Which of the following represents a negatively charged ion? of t 7

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.

Collin would like to use the data a coworker has entered in a database. the problem is the coworker's database software is different from collin's. collin should