What are the major transport mechanisms for `CO_(2)`? Explain.

Explanation

### Step-by-Step Solution:

1. **Introduction to CO₂ Transport**:
Carbon dioxide (CO₂) is a waste product of cellular respiration and needs to be transported from the tissues to the lungs for exhalation. There are three major mechanisms through which CO₂ is transported in the blood.

2. **Dissolved CO₂ in Plasma**:
- Approximately **7%** of CO₂ is transported in a dissolved state in the plasma.
- This is possible because CO₂ is highly soluble in water, and since plasma is composed of about 50% water, a small amount of CO₂ can dissolve directly into it.
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