i) - It is easy to get information especially if it is already analyzed.
- It is cheap because it does not involve extensive travelling.
- It saves time.
- It is possible to get old data because it is already stored.
ii) - It deprives some soil horizons soluble minerals and soluble humus that is, elluviation and iluviation.
- It may cause salinity (salination) in areas where evaporation is greater than precipitation.
iii) - To avoid being denied permission to enter restricted premises on the day of study.
- Enables one to plan/arrange for a suitable time/day to visit.
- To arrange for a guide to conduct the students around.
maurice.mutuku answered the question on November 19, 2019 at 08:00
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