Answer:
Explanation:
Canal irrigation is when water is being passed through canals from rivers, streams, reservoirs etc to the farm.
The advantages of canal irrigation are:
1. The loss of water is reduced.
2. Water logging can easily be controlled.
3. The benefit can be enjoyed for a long time as it is a permanent structure.
4. A smooth surface is done which lead to an increase in the flow velocity.
The disadvantages include:
1. The cost involved in setting up the canal system is high.
2. A lot of time is required before its completion.
3. A lot of difficulties are experienced when it malfunctions or damages.
Answer:
Cold, dry
Explanation:
Humid air is often more associated with tropical climates, and we can assume from "polar" that the answer would be cold.
Answer:
The use of chemicals in factories resulted in increased air and water pollution making it harmful to human life.
