Answer:
The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
Explanation:
The earliest primates are found in the Paleocene epoch. :)
C
its temperature because it's the best answer
Gusto ko ng mga purong iyon
