The process of changing a solid to liquid is called ______.

The process where water vapour changes back to water is called

Resources that won't be available if we keep using them are called ______ resources.

Petrol and gold are ______ resources.

Sunlight and water are ______ resources.

Evaporation is the conversion of ______ to water vapour.

Evaporation and melting require ______.

Condensation and solidification require ______.

Water can be found in ______ states of matter.