Please choose the correct answer to the question: Homes that are built to be environmentally friendly because they use energy more efficiently than other homes are called "green" homes. "Green" homes often have reflective roofs and walls made of recycled materials. The windows in these energy-saving homes are double-paned, meaning each window has two pieces of glass. Double-paned windows have a layer of air between the window panes. This layer is a barrier against extreme temperatures and saves energy. A solar panel on a "green" home uses

Answer1: chemical energy Answer2: mechanical energy Answer3: a renewable energy source Answer4: a nonrenewable energy source

Answer format: answer1/answer2/answer3/answer4