State whether the following statement is true or false. If false write the correct statement.

Water from rivers and lakes is – potable water.

State whether the following statement is true or false. If false write the correct statement.

Chemical pollutants include metallic salt solution of mercury and lead.

Explain the meaning of the following term:

Rain water harvesting

Explain the meaning of the following term:

Drip irrigation in agriculture

Explain the meaning of the following term:

Saturated solution

Explain the meaning of the following term:

Conservation of water

Explain the meaning of the following term:

Gaseous state of water in air