Explanation:
Hi there!
The process of converting pH into [H+] is: pH = -log[H+]
pH + pOH = 14
The process of converting pOH into [OH-] is: pOH= -log[OH-]
you will definitely need a calculator for the conversions
Fossils can provide the time a species existed through carbon-14 dating, and can also show structures within the species that are similar to other organisms on earth today or other organisms before/slightly after that fossils existence.
A secondary source is anything written after the fact
bcd i think..............