The salt concentration in inland waters and in the sea water, respectively are

Options

A. More than 5 ppt, 30-35 ppt
B. Zero ppt, 35-45 ppt
C. 30-35 ppt, less than 5 ppt
D. Less than 5 ppt, 30-35 ppt

Answer

To answer the question regarding the salt concentration in inland waters and seawater, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Salinity**:
- Salinity refers to the concentration of salts in water, typically measured in parts per thousand (ppt). It is crucial for determining the types of organisms that can thrive in different water bodies.

2. **Salinity of Seawater**:
- The average salinity of seawater is approximately 30 to 35 parts per thousand (ppt). This high concentration of salts is due to the evaporation of water and the accumulation of minerals from various sources.

3. **Salinity of Inland Waters**:
- Inland waters, which include lakes, rivers, and streams, typically have a much lower salinity. The salinity of these bodies of water is generally less than 5 parts per thousand (ppt). This is because they are often fed by freshwater sources, such as rain and rivers, which dilute the salt concentration.

4. **Conclusion**:
- Based on the information gathered, we can conclude that the salt concentration in inland waters is less than 5 ppt, while in seawater, it is 30 to 35 ppt.

### Final Answer:
- The salt concentration in inland waters and in seawater, respectively, is: **Less than 5 ppt (inland waters) and 30 to 35 ppt (seawater)**.

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