Which of the following is an example of a homologous structure? 1.Eyeballs
2.Bird wings
3.Bat wings
4.Wisdom teeth

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.