An example of people adapting to their environment is

Those who live in high altitudes such as those in the Himalayas have adapted by having a higher red blood cell count to store more oxygen as oxygen levels are low at high altitudes they also have a larger lung capacity to breath in more oxygen per breath. These adaptations are evolutionary and not ones they choose themselves. 

The answer of your question is it’s made out of solar winds

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.