What is the answer?

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

OPTIONS:
- chemical energy
- mechanical energy
- a renewable energy source
- a nonrenewable energy source
a renewable energy source
Vad är svaret? Hem som är byggda för att vara miljövänliga eftersom de använder energi mer effektivt än andra hem kallas "gröna" bostäder. "Gröna" hem har ofta reflekterande tak och väggar av återvunnet material. Fönstren i dessa energibesparande bostäder är dubbelpansrade, vilket innebär att varje fönster har två glasbitar. Dubbelpansrade fönster har ett luftlager mellan fönsterrutorna. Detta lager är en barriär mot extrema temperaturer och sparar energi. En solpanel på ett "grönt" hem använder alternativ: - kemisk energi - mekanisk energi - en förnybar energikälla - en icke-förnybar energikälla
What's the answer? Homes 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 of recycled materials. The windows of these energy-saving homes are double-paned, meaning that each window has two pieces of glass. Double-paned windows have an air layer between the windows. This layer is a barrier to extreme temperatures and saves energy. A solar panel on a "green" home uses alternatives: - chemical energy - mechanical energy - a renewable energy source - a non-renewable energy source
en förnybar energikälla
a renewable energy source