Which of the following is a chemical abiotic factor?

Options

A. Pressure
B. Temperature
C. Salinity
D. Solar radiation

Answer

To determine which of the following is a chemical abiotic factor, we need to analyze the options provided:

1. **Understanding Abiotic Factors**:
- Abiotic factors are the non-living components of an ecosystem that influence living organisms. They include physical and chemical factors.

2. **Analyzing the Options**:
- **Option 1: Pressure** - This is a physical abiotic factor, not chemical.
- **Option 2: Temperature** - This is also a physical abiotic factor, not chemical.
- **Option 3: Salinity** - This refers to the concentration of salts in water, which is a chemical property of water. Therefore, it is a chemical abiotic factor.
- **Option 4: Solar Radiation** - This is a physical abiotic factor related to light energy from the sun.

3. **Conclusion**:
- Among the given options, salinity is the only one that represents a chemical abiotic factor.

Thus, the correct answer is **Option 3: Salinity**.

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