Question 13 1 pts 13. each year there are close to billion trees planted in the united states o six o five o two o one question 14 1 pts 14. the reason certain types of trees dominate a region is because of a natural process called wildlife o succession o overstory o deciduous question 15 1 pts 15. an area where all living and nonliving features depend on each other is called an o preservation o industry o axygen system o ecosystem

The world wars of the twentieth century immediately led to a. the establishment of a communist bloc in eastern europe b. the urbanization of europe’s societies c. an emphasis on humanism d. an emphasis on ties to greek and roman societies select the best answer from the choices provided. a b c d

The graph below plots the temperature and luminosity of stars on the main sequence.

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? a. turkey has a lower gdp than comparable countries in the hdi ranking. b. turkey must increase its hdi to have a higher gdp ranking. c. turkey is only compared to other european countries in gdp, not to the world, as it is in the hdi. d. turkey may struggle to provide adequate education or health care, or it may have a lower life expectancy.