What can an archaeologist conclude about artifacts found in the same "strata" (a layer or a series of layers of rock in the ground)?
a
b
The artifacts were from a people with no technology.
Different people made the artifacts
The remains are from the same time period
The remains are from a different time period
С
d

The remains are from the same time period

Explanation:

Geological strata are rock layers that are formed through time. As time passes, new stratas are formed upon the old ones.

If an archeologist finds several artifacts in the same strata, it indicates that the artifacts are very likely to be from the same time period. This is why archeologtists study geology, and give great importance to the understanding of geological strata.

your answer would be a) no nation can be economically self-sufficient.

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