Name any two physiological barriers that provide innate immunity.

Explanation

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

1. **Understanding Innate Immunity**: Innate immunity is the body's first line of defense against pathogens. It is present from birth and is non-specific, meaning it does not target specific pathogens but rather provides a general defense against a wide range of invaders.

2. **Identifying Physiological Barriers**: Physiological barriers are bodily functions that help prevent infections and protect the body from pathogens.

3. **Example 1 - Stomach Acid**: One significant physiological barrier is the hydrochloric acid (HCl) present in the stomach. The stomach secretes this strong acid, which has a low pH. This acidic environment is hostile to many microorganisms, effectively killing them and preventing infections.

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