Hello there!
Your question: What is the meaning of rural depopulation?
Your answer: The less reachable rural areas have a less population. In these less reachable rural areas several young people evacuate. This is known as rural depopulation.
Hope this helps! :D
Plate tectonic is a scientific theory that says the Earth’s lithosphere is divided into several plates. The plates glide over the mantle. In early 20th century, this theoretical model builds on the concept of continental drift. It was first proposed by the scientist Alfred Wegener in 1912. After seafloor spreading was validated, the theory was accepted by the geoscientific community.
A I think this is the answer