These reactants are undergoing a Diels-Alder reaction, what are the products?

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

What causes most sediment to wash or fall into a river

Heat is the total potential energy of a substance that can be transferred. true false