Which river forms most of texas's southern border? a. red river b. sabine river c. canadian river d. rio grande

How many time zone are there on earth

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.

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."