In the late 1700s scientists proposed that the layers in the rocks of mountains and canyons represented a record of the passage of time, with the younger layers lying on top of the older layers. What could they determine about the fossils they were finding?
a)Fossils in upper layers were younger than fossils in lower layers.
b)Fossils in upper layers were less weathered and more detailed than those in lower layers.
c)The exact age of a fossil could be determined by counting the rock layers.
d)The oldest fossils were the same as the ones found in younger rock layers
I THINK IS B OR D IDK?

Question

In the late 1700s scientists proposed that the layers in the rocks of mountains and canyons represented a record of the passage of time, with the younger layers lying on top of the older layers. What could they determine about the fossils they were finding?
a)Fossils in upper layers were younger than fossils in lower layers.
b)Fossils in upper layers were less weathered and more detailed than those in lower layers.
c)The exact age of a fossil could be determined by counting the rock layers.
d)The oldest fossils were the same as the ones found in younger rock layers
I THINK IS B OR D IDK?

anonymous · Answer

I'd lean more towards A if only because the younger layers would be expected to have the most recent fossils.