Which of the following represents the impacts of drilling and fracking on human health? I. Toxic chemicals can leak into drinking water.
II. Air pollution can lead to irritation of eyes, nose, and throat.
III. Heavy metal exposure can cause birth defects.

III only

I and II

I and III

I, II, and III

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.