Choose your answer from: 1. heating liquids. 2. Protons. 3. chemical messengers. 4. enormous damage to homes. 5. Combustion. 6. transportation technology. 7. Electric generators. 8. Food.
Q: Fact 1: Atoaster converts electrical energy into heat energy for toasting. Fact 2: Electric generators convert mechanical energy into electric energy. Given the two facts above, toasters can get energy from what?
A:
7.