Answer:
the resistance that one surface or object encounters when moving over another.
Explanation: :D
Natural vs. Synthetic Venn Diagram: Natural chemicals are produced by nature without any human intervention. Synthetic chemicals are made by humans using methods different than those nature uses, and these chemical structures may or may not be found in nature
So for the first one It's 784.56 J (GPE)
For the second one it's KE is equal to 100 J. If you can give me a few more minutes I'll try to get the GPE
I think It's a value that depends on another
B.compound Because compound is when two element are combined or joined chemically