Scientists study fossils in order to a. predict how a species will react to weather b. learn how species changed in the past c. learn about what types of species will evolve in the future d. predict weather patterns

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

All of the following occurred due to the invention of the railroad except

Describe a strategy to reduce the amount of fossil fuel‘s people use in the united state