A paleontologist finds a fossil below a rock layer that is known to be 50,000 years old so he thinks the fossil is older than 50,000 years. what type of dating is this?

RADIOCARBON DATING

Explanation:

Scientists called geochronologists are experts in dating rocks and fossils, and can often date fossils younger than around 50,000 years old using radiocarbon dating. This method has been used to provide dates for all kinds of interesting material like cave rock art and fossilized poop.

b

explanation:

mitosis

if you mean hydrogen and oxygen then water is the product