Lower the atmospheric pressure, ____________ is the rate of transpiration.

Explanation

To answer the question: "Lower the atmospheric pressure, ____________ is the rate of transpiration," we can follow these steps:

### Step-by-Step Solution:

1. **Understand Transpiration**:
- Transpiration is the process by which plants lose water in the form of water vapor from their aerial parts (like leaves).
- It is a crucial process for maintaining water and nutrient flow within the plant and for cooling the plant.

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