Question

advantage and disadvantages about flood

Answer 1

Disadvantages
pollution of drinking water
landslides 
destruction of livelihood
death of many people
unhygienic conditions

advantages
making soil more fertile
decreasing population(this is not a proper advantage sarcastically)

Answer 2

Disadvantages of a FloodThe society and economy of a country suffers in many ways after a flood. The loss of lives, vegetation, and infrastructure means there will be fewer people on the labor force, less agriculture available for locals and exportation, and less businesses to contribute to the economy of the country. There will be mass dislocation of people, many of whom may be left homeless and jobless. In order to fill this gap the government will have to spend a little more. The country may seek assistance from foreign countries to supply food and materials to clean and replace infrastructure. While some countries will assist freely, some will charge for its efforts, putting the country in debt and at an economic loss. Benefits of a FloodThere are benefits of flooding despite its immediate ill effects. For farmers and those in the agricultural sector, it helps them in the long run by providing nutrients to the soil that were lacking. This makes the soil more fertile and increases agricultural production. Nutrients are also added to rivers and lakes, improving the health of fishes that can be consumed. There may be relocation of fishes and organisms living in water bodies. This may improve the ecosystem. New predators and prey are introduced to areas, balancing the aquatic population