How do substances like CO2 and water move in and out of the cell? Discuss

Explanation

### Step-by-Step Solution:

1. **Understanding Diffusion**:
- Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. This occurs until there is an equal distribution of molecules.

2. **Movement of Carbon Dioxide (CO2)**:
- In the case of carbon dioxide, CO2 is produced as a waste product of cellular respiration. Within the cell, the concentration of CO2 is higher compared to the concentration outside the cell.
- Because of this concentration gradient (higher inside the cell and lower outside), CO2 moves out of the cell into the external environment through the process of diffusion.
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