Question

1. Which type of irrigation method will be best for dry regions such
as desert? Give suitable reasons.
2. What are the three factors affecting friction? Explain each.​

Answer 1

1. Moringa trees grow well in desert regions, and they are drought tolerant. We can water it lot less than any other plant or crop. Other good method is sprinkler irrigation.

2. The nature of the surface (smoothness or roughness) affects the friction. Smooth surfaces have lesser irregularities. The lesser the irregularities, the lesser the tendency to lock. The lesser the tendency to lock with another object, the lesser the friction (that is tendency to oppose motion).

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