An animal is not an osmoregulator if its fluids are ............... with its surroundings.

Explanation

To answer the question, "An animal is not an osmoregulator if its fluids are ............... with its surroundings," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Osmoregulation**:
- Osmoregulation is the process by which an organism regulates the water and electrolyte balance in its body fluids to maintain homeostasis. Osmoregulators actively control their internal environment regardless of external conditions.

2. **Identifying Osmoconformers**:
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