This map shows the number of freshman from the state of Pennsylvania enrolled in the state university. What information can be gathered from this map?

Which biochemical cycle is relied upon for plant photosynthesis

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

1. crust 1 the metallic layer at the earth's center 2. inner core 3 the firm layer between the crust and the asthenosphere 3. lower mantle 2 the layer surrounding the inner core 4. asthenosphere 4 the semi-solid layer between the top layer and the upper mantle 5. upper mantle 5 the layer between the asthenosphere and lower mantle 6. top layer 6 the earth's outermost layer 7. outer core 7 the hottest part of the mantle