What is used for generating heat by burning?
Calcium carbonate carbon dioxide fossil fuels clouds peachleaf willow space calcite sunlight
A B C D E F G H
Like coal, petroleum is a fossil fuel.
fossil fuels are used for generating heat by burning
What is used for generating heat by burning? (A) Calcium carbonate (B) carbon dioxide (C) fossil fuels (D) clouds (E) peachleaf willow (F) space (G) calcite (H) sunlight