The pangaea theory supports the theory of plate tectonics because

a. it is based on the idea that there were several land masses when earth was first created

b. it is based on the idea that all the present continents were one supercontinent

c. it does not require scientists to support the notion that earth's plates can move

d. one day, earth will have one large land mass again

What is the approximate circumference of the circle shown below? 12.2 cm

The dashed segment of the plotted experiment in the graph in the lesson is called an

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