✔ 最佳答案
CAUSES:
Heavy and prolonged rainfall.
Large volume of discharge
Melted snow water
Great Relief
Deforestation
Agrecultural activities
BAD IMPACTS:
Threatens our lives and properties.
Causes dealths and injuries
Agricultural products will be destroyed or killed
Food supply will be seriously reduced
Affects the supply of fesh water, the communication and transport system
The fresh water will be affected
Affects the hygienic condition of the affected city
GOOD IMPACTS:
The soil becomes more fertile
Fertile soil is good for farming
The ancient civillizations started