One disadvantage of hydropower ...
Kills vegetation and fishes
Hydro means ...
water
The spiral can rotate because of ...
hot air rises from the candle
People can use wind energy for ...
spin the wind turbine, playing kite, sailing
Renewable source ...
sun, wind, water
Without the sun our earth will be...
dark and cold
Paper windmill can spin because of ...
wind energy
A country so famous for its windmills
Netherlands