Please Help! Which of the following has kinetic energy? A compressed spring
An arrow shot from a bow
Water in a reservoir at a hill top
A monkey hanging from a tree

Enzymes affect the reactions in living cells by changing the

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

The element that has the greatest electronegativity is