Living organisms are constantly in need of energy which they derive from food. Then why have we to eat only intermittently?

Explanation

**Step-by-Step Solution:**

1. **Understanding Energy Needs**: Living organisms require energy to perform various biological functions. This energy is primarily derived from the food we consume.

2. **Energy Production from Food**: When we eat food, it undergoes a process of oxidation in our body. This process breaks down the food into simpler molecules, releasing energy in the form of ATP (adenosine triphosphate), which is used by cells for various activities.

3. **Rate of Oxidation**: The oxidation of food does not happen instantaneously. Instead, it occurs gradually over time. This means that once we consume food, our body continues to extract energy from it over several hours.

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