Active absorption and passive absorption

Explanation

### Step-by-Step Solution

1. **Definition of Active and Passive Absorption**:
- Active absorption refers to the process where plants take in minerals and ions from the soil using energy, usually in the form of ATP. This process is essential for the uptake of nutrients that are present in lower concentrations outside the plant compared to inside.
- Passive absorption, on the other hand, occurs without the use of energy. It relies on natural processes such as diffusion and osmosis, where substances move from areas of higher concentration to areas of lower concentration.

2. **Energy Requirement**:
- In active absorption, energy is consumed. This is necessary for the transport of ions against their concentration gradient. For example, the sodium-potassium pump uses ATP to move sodium ions out of the cell and potassium ions into the cell.
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