The middle layer has no fossils. As such, the layer is likely not the same age as the fossils above and below it. The middle layer might represent a rock intrusion that occurred at most 445.6 MYA, based on the age of the trilobite. The middle layer could also be older than Peripatus, at least 570 million years old. The age of the middle layer can’t be stated with any certainty.
Explanation:
This is the correct answer according to PLATO/ edmentum
The population of Oregon which is given above may also be expressed in scientific notation as, 4 x 10^6 The magnitude of this number is the exponent of 10 in the scientific notation. Thus, the answer is letter "B. 6".
