Name the major cation and the two major anions in ECF, and in ICF.

Explanation

To answer the question regarding the major cation and anions in extracellular fluid (ECF) and intracellular fluid (ICF), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- ECF stands for Extracellular Fluid, which is the fluid outside the cells.
- ICF stands for Intracellular Fluid, which is the fluid inside the cells.

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