Fact 1: Erosion of soil has a negative impact on the environment.

Fact 2: Weathering and erosion continue to shape it today.

Given the two facts above, answer the question "What has a negative impact on the environment?" with the following options: 
- harmful substances
 - weathering of soil
 - saving water
 - planting trees
 - deforestation
 - massive damage
 - recycling
 - enormous damage to homes


 

  weathering of soil       