12. a useful tool illustrating the relationships among igneous, sedimentary, and metamorphis rocks is called the a. water cycle b. plate tectonic cycle c. relationship between pre-existing rocks d. lithosphere e. rock cycle

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

What distinguishes monsoon asia from the remainder of asia? what are the consequent differences between the two?