The correct answer is: Layer 1, layer 2, and layer 4 in all three regions.
The index fossils are fossils that are commonly used for identifying a geological period of time, and these fossils are also very wide spread, as well as having a rapid evolutionary trends.
By this picture, we can easily see that even though we have rock strata from different regions, the same layers contain the same fossil, and it is a fossil that also is rapidly evolving so has a minor change in each layer.
Answer:
what do you mean don't understand
Explanation:
you're not telling good information
this statement is False. prenatal development stages in order go from the germinal stage, embryonic stage, and the fetal stage, hope this helps :)
