In the image above, the arrow is pointing to a layer of the Earth that is solid and extremely hot. Which of the Earth’s layers is the arrow pointing to?

Which of teh following would explain the importance of the trans-siberian railroad to russia's economy? (schoology test)

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.

Which statement best describes how chemical equations demonstrate conservation of mass?