Two layers of rock contain trilobites that have the same body morphology; however, one rock layer is a shale and the other is an ironstone. can these two layers be used for correlation?

Yes

Explanation:

If the trilobites  are the same then two layers of rock contain trilobites that have the same body morphology; however, one rock layer is a shale and the other is an ironstone.

If a layer contain a distinct fossil then it can be use as marked bed.As we know that layers are formed due to weathering of mountains and erosion and these particle deposit on the sedimentary basin and after long time theses particles form layer of rocks.

it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.

answer; ///attempts to change more than once behavior at the same time;