____ cannot be seen, but the ____ of it can be seen. There is ____ or ____ energy that falling objects have. There is the energy from the sun called ____ energy. We can ____ energy using the wind. Energy from the wind is ____ because it can be replaced, but coal is a ____ energy. Ev are ____ friendly because they produce very little pollution. Coal, oil and gas are ____ ____ and produce a lot of ____. Examples of this pollution is : ____ ____ .

Leaderboard

Visual style

Options

Switch template

Continue editing: ?