Why do some people think transgenic organisms are dangerous?

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.

Someone with these questions! pls 30 pts

What are the two functions of the respiratory system