Give two common characteristics of class Aves and Mammals

Explanation

**Step-by-Step Text Solution:**

1. **Identify the Classes**: The question asks for common characteristics of two classes: Aves (birds) and Mammals. Aves includes species like sparrows, crows, and doves, while Mammals includes species like cows, bats, and cats.

2. **Define Common Characteristics**: Common characteristics are traits that are shared by both classes. We need to identify two such traits.

3. **First Common Characteristic - Homeothermy**:
- Both Aves and Mammals are homeothermic (warm-blooded) animals.
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