Answer:
When soil conditions are disrupted, but there remains topsoil and some limited vegetation, succession can take place much faster.
Explanation:
- The soil that contains the highest nutrition is the topsoil layer. The nutrition in this layer can help the crop thrive long enough and reach maturity.
- The presence of topsoil is critical when it is difficult to provide external nutrition to the plants as the topsoil itself proves to be the provider of nutrition in most cases.