Diffusion is a slow process and is not dependent on

Options

A. concentration gradient
B. membrane permeability
C. a living system
D. temperature and pressure

Answer

**Step-by-Step Solution:**

1. **Understanding Diffusion**: Begin by defining diffusion. It is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

2. **Analyzing the Options**:
- **Option 1: Concentration Gradient**:
- Diffusion is directly dependent on the concentration gradient. A higher concentration gradient leads to a faster rate of diffusion. Therefore, this option is incorrect.

- **Option 2: Membrane Permeability**:
- The permeability of the membrane affects how easily substances can diffuse across it. A more permeable membrane allows for faster diffusion. Thus, this option is also incorrect.

- **Option 3: Living System**:
- Diffusion occurs in both living and non-living systems. It does not require a living system to take place. Hence, this option is correct as diffusion is not dependent on a living system.

- **Option 4: Temperature and Pressure**:
- Both temperature and pressure influence the rate of diffusion. Higher temperatures increase kinetic energy, leading to faster diffusion, and pressure can affect the concentration of gases. Therefore, this option is incorrect.

3. **Conclusion**: Based on the analysis, the correct answer is that diffusion does not depend on a living system.

**Final Answer**: Diffusion is a slow process and is not dependent on a living system.

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