Which layer is the oldest? How do you know? Which layer is the youngest? How do you know?
Has any of the rock layers undergone metamorphism? How do you know?

What does the kyoto protocol aim to reduce

Dubai is challenged by all of the following environmental factors except a. a warm and dry climate b. a lack of annual rainfall c. scarce freshwater resources d. a lack of valuable natural resources

What statement about the economy of france is not true? a. paris is a major manufacturing center b. marseille is a busy seaport on the mediterranean coast c. farming is the major activity in the alps. d. world-famous wines are produced in the bordeaux region c. farming is the major activity in the alps