What event might occur when favorable adaptations build up in a population over many generations?

Data courtesy of the un development programme 2006-2008 and world bank 2009 the chart above compares measures of development using the hdi and gdp. why might turkey rank lower in the hdi indicator even though it has a high gdp?

On nights when we see the new moon phase, what side of the moon are we seeing?

People make choices about how to use resources.