The salt concentration is 30 -35 ( salinity in parts per thousand ) in

Options

A. inland water
B. sea
C. hypersaline lagoons
D. estuaries

Answer

To solve the question regarding the salt concentration of 30-35 parts per thousand, we need to analyze the options provided and determine which environment corresponds to this salinity level. Here’s a step-by-step breakdown:

### Step 1: Understand the Salinity Levels
Salinity is measured in parts per thousand (ppt), and different aquatic environments have characteristic salinity levels:
- **Inland Water**: Typically has a salinity of 0-25 ppt.
- **Estuaries**: Generally have lower salinity levels, around 15-20 ppt.
- **Sea Water**: Usually has a salinity of about 30-35 ppt.
- **Hyper Saline Lagoons**: These environments can have salinity levels exceeding 40 ppt.

### Step 2: Analyze the Options
Given the salinity levels:
1. **Inland Water**: 20-25 ppt (not suitable)
2. **C**: 30-35 ppt (potentially suitable)
3. **Hyper Saline Lagoon**: 40-50 ppt (not suitable)
4. **Estuaries**: 15-20 ppt (not suitable)

### Step 3: Identify the Correct Answer
From the analysis:
- The only environment that matches the salinity level of 30-35 ppt is **C**.

### Conclusion
The correct answer to the question about where the salt concentration is 30-35 parts per thousand is **C**.

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