The atmosphere . A. becomes denser with increasing altitude B. remains at constant density with increasing altitude C. becomes less dense throughout the troposphere and then more dense in the stratosphere D. becomes less dense with increasing altitude

The mantle is made up of which structural zones?

The primary agent of contact metamorphism is

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare