Answer:
Advantages.
1.Fertile land for farming especially rice
2.plenty of water for fishing or agrictulture.
Disadvantages.
1.mosquitoes are attracted to water (malaria,dengue).
2.ares are at a constant risk of flood.
The pesticide will be in the animals that eat the grasshoppers, in the water table, in humans that eat the animals/crops and drink the water.