1) Low
2) A lack of natural predators
Not sure whether it’s totally correct, do cross-check.
Using the principle of faunal succession, if an unidentified fossil is found in the same rock layer as an index fossil, the two species must have existed during the same period of time (Figure 4). If the same index fossil is found in different areas, the strata in each area were likely deposited at the same time.
Answer:
578.6 83
8 is greater than 4
so this becomes
578.7 meters
47.33 33
3 is less than 4 so this becomes
47.33 kilograms
