A method of heating a building might be what?
dangerous Blizzards Heated arguments threatened major threat to health Direct sunlight. Mothballs slow and inefficient
A B C D E F G H
Passive solar thermal energy involves heating buildings using direct sunlight.
Direct sunlight can be used to heat a building.
A method of heating a building might be what? (A) dangerous (B) Blizzards (C) Heated arguments (D) threatened (E) major threat to health (F) Direct sunlight. (G) Mothballs (H) slow and inefficient