Floods causes loss to property and life, but a benefit of floods isOptions :Water-borne diseasesDistribution of nutrientsDecline in tourismDamage to crops

The question asks for the benefits of floods, despite their adverse effects. Among the options provided, we can analyze each one to find out which presents a potential benefit.

1. Water-borne diseases: This is not a benefit of floods. In fact, floods often lead to an increase in water-borne diseases due to contaminated water supplies.

2. Distribution of nutrients: This can be considered a benefit. Floods can cause the overflow of riverbanks, which spreads sediments across the floodplain. These sediments can be rich in nutrients, which can enhance soil fertility, benefiting agriculture in subsequent growing seasons.

3. Decline in tourism: This does not constitute a benefit. A decline in tourism typically results from the negative impacts of floods, affecting local economies adversely.

4. Damage to crops: Similar to the decline in tourism, damage to crops is a negative consequence of floods and is thus not a benefit.

Conclusion

The only option that stands out as a potential benefit of floods is distribution of nutrients. Flooding can contribute positively to the ecosystem by replenishing soil quality and supporting agricultural productivity in the long run.