Rock fragments thrown into the air during a volcanic eruption are called

I believe they are called "Volcanic rocks"

Tephra
https://quizlet.com/142305374/section-183-volcanoes-flash-cards/
^ Here is a quizlet with questions/ answers similar to this.

You not be doing this in a quiz. if you actually studied your work you would know the answer. the answer though is that they would use gdp per capita because it measures a smaller portion (person). this could show individual growth per person in the country.