Reactants would be the missing word in the sentence because they make up the products in a chemical reaction
Parsecs or abbreviated pc
Answer:“If we’ve covered all of the potential sources, and we know the unique signature of the sand from these different sources, and we find it on a beach somewhere, then we basically know where it came from,” explained Barnard.
Explanation:
0 because you would be floating at the top within seconds and also have fun with the sudden stop
