State true (T) or false (F).
Acrylic is warmer than pure wool _________

Explanation

**Step-by-Step Solution:**

1. **Understanding the Materials**: We need to compare the warmth of acrylic and pure wool. Acrylic is a synthetic fiber, while pure wool is a natural fiber.

2. **Properties of Pure Wool**: Pure wool has a unique structure with many tiny holes or fibers. These holes trap air, which acts as an insulator. The trapped air prevents heat from escaping, making wool warmer.

3. **Properties of Acrylic**: Acrylic, on the other hand, does not have the same insulating properties as wool. While it can mimic the feel of wool, it lacks the ability to trap air effectively.

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