Geologists found fossils in several layers within the earth and have determined, by using c-14 dating, that of all of the following layers of fossils found in the illustrated rock layers the fossils found in layer are the oldest.

Answer

In the rock layers, the fossils found in deepest layers/mantle are the oldest.

Explanation

Geological column showing rock layers is an evidence used by geologist to determine the older and younger fossils. The deeper we dig , the farther back in time we see. The oldest fossils are found at the deepest layers and the youngest  are at the top.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.