Respuesta :
Cushion or protection. It says that it keeps heating bills low in the winter. Meaning, they're blocking the cool air, and keeping the heat from escaping.
The correct answer is Cushion or protection.
Indeed, these trees protect the house from the heat during summer because they protect it from the very hot sun rays. They also protect the house from the extreme cold of the winter because they keep a lot of the cold wind and the snow from ever reaching the home. They act thus like a thermic cushion and help protect the house from the rigors of elements.