Answer:
D
Explanation:
D layer is the last layer of the soil that is present at the bottom of other layers having the oldest layers. The bottom layer of soil is formed first and when we go up the age of soil layers decreases because it is formed after the parent soil. The fossil that is present at the bottom layer is considered as oldest fossil as compared to those fossils that are present in the above layers of that soil.
The answer is:
_______________
The hydrosphere.
ireland has severe problems between its north and south alot in the past too
but a recognisable country would be south korea and north korea
