Answer: a law
Explanation: If you need the definition too. A descriptive statement or equation that reliably predicts events under certain conditions.
1. The sun transforms nuclear energy into heat and light energy.
2. Chemical reaction is a chemical substance that can be transformed to other forms of energy. As an example, when a fuel is burned the chemical energy of molecular oxygen is converted to heat, and the same is the case with digestion of food metabolized in a biological organism.
A negative reinforcer is any stimulus that, when removed after a response, strengthens the response.
