Question

Many important fossil discoveries have occurred in the Great Rift Valley of Africa. Describe the process that enabled these fossils to become exposed

Answer 1

Mining and Erosion are  basically the two main techniques that are used for these fossils to become exposed.

Mining is  the extraction of minerals .
whereas 
Erosion is reaction of the surface processes 
hope it helps

Answer 2

Answer:

Mining and Erosion are  basically the two main techniques that are used for these fossils to become exposed.Mining is the extraction of minerals.Erosion is reaction of the surface processes.