Asthenosphere is the upper of the Earth's mantel, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur. (Hopefully This helps)
I would say that one reason is since developed countries are so advanced in every aspect...they have no time to reproduce, so there are no replacements for old people, hence the increase in the average population age.
Answer:A. Marine West Coast
Explanation:
The design of earth gives living things a place to survive. It's moon affects the tides and gives a water source, the sun provides heat and helps the earth not freeze.
