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mario62 [17]
3 years ago
7

In North America, what "fossils clues" in layers A and B indicate the kind of environment that existed when these rock layers we

re formed? How did the environment change in layer D?
History
1 answer:
alex41 [277]3 years ago
3 0

Answer:

The late Cretaceous period and environment changed due to changes in climate when the asteroid hit the planet and covered the sun rays.

Explanation:

  • As per the fossil records shown the layers A and B are the oldest and they have shells, ammonites, trilobites, and fish that shows it was underwater. The layer D is that formed by the dinosaurs and plants as in the Cretaceous period when plants on land were found.
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