Jhum cultivation has been in practice from earlier days, but it is considered more problematic these days. Why?

Explanation

### Step-by-Step Solution:

1. **Understanding Jhum Cultivation**:
- Jhum cultivation, also known as shifting cultivation, is a traditional agricultural practice primarily found in hilly and forested regions. It involves clearing a piece of land by cutting down vegetation (the "slash" part) and then burning it (the "burn" part) to prepare the soil for planting crops.

2. **Historical Context**:
- Historically, Jhum cultivation was sustainable and practiced by indigenous communities. It allowed for the regeneration of soil and vegetation, as farmers would move to a new plot after a few years, giving the previous plot time to recover.

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