Weegy: The second law of thermodynamics states that energy can neither be created nor destroyed, but it can change from one form to another. User: _____ are chemical mechanisms that start a reaction.
Vacuoles Weegy: Inhibitors are chemical mechanisms that start a reaction. User: After a caterpillar eats a leaf, it can convert the chemical energy into _____ energy to help it build a cocoon. ... (More)