When scientists use the law of superposition to determine the age of a fossil, they go by the principle of 'every undisturbed layer of rock is older than the layer above it. This is not the most precise way of determining age, and in fact this method can only reveal the approximate age, but not the exact one.
Ibig sabihin ng responsable ay - pagkakaroon ng obligasyon na gawin ang isang bagay, o pagkakaroon ng kontrol o pangangalaga sa isang tao, bilang bahagi ng trabaho o tungkulin ng bawat tao
