What can help to stop soil erosion ?

just read the explanation.

Explanation:

1.Maintaining a healthy, perennial plant cover.

2.Mulching.

3.Planting a cover crop – such as winter rye in vegetable gardens.

4.Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.

Hope this helps. :)

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.