Answer: The correct answer is : by the forces of the earth (elevation) and by a physical force (erosion)
Explanation: The rocks that contain the fossils are eroded or folded, in this way the vestiges are left uncovered and in this way they are easily found by paleontologists, analyzing and submitting to studies the sedimentary rocks to determine the past of the fossils. A fossil can be destroyed in 4 ways: crushed, removed, eroded or melted.