Fact 1: Heavy rains cause flooding.

Fact 2: Flooding is problematic because it causes erosion problems.

Given the two facts above, answer the question "Erosion can be caused by " with the following options: 
- coastlines
 - mouth of rivers
 - vehicles
 - heavy rains
 - Pesticides
 - deforestation
 - detritus
 - ice wedging


 

    heavy rains     