Question

.) Why do birds migrate?
(3) Which irrigation system is useful in water scarcity area? Why?​

Answer 1

Explanation:

1. Birds migrates for getting suitable conditions for their life . eg. » if a migratory bird is in north pole when north pole is becoming hot then they migrates to south pole or another area of cold climate which is suitable for them
2. Sprinkle system(nozzle system ) because this system is used for irrigation in those areas where water is less available . In this system pipes with pores are used like a fountain and water is spread like rain Or Drip system because in this system pipes are used underground with pores near the root of the plant . It prevents wastage of water . This system is usually used for irrigation of gardens and fruit trees

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