How is this chain of volcanic islands forming? Tectonic plates are sliding past each other, generating magma, which creates a volcano. Two tectonic plates are pulling apart, creating magma through decompression melting. A tectonic plate is moving over a mantle plume, which burns through the plate to create a chain of volcanoes. A tectonic plate is being subducted and partially melted, producing magma that rises to create a volcanic chain.

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.