Sources of energy which cannot be replenished with a short period of time or are lost forever are called (renewable/non-renewable) sources of energy.

Explanation

To answer the question, "Sources of energy which cannot be replenished with a short period of time or are lost forever are called (renewable/non-renewable) sources of energy," we can follow these steps:

### Step 1: Understand the Definitions
- **Renewable Sources of Energy**: These are sources that can be replenished naturally in a short period of time. Examples include solar energy, wind energy, and hydro energy.
- **Non-Renewable Sources of Energy**: These are sources that cannot be replenished quickly or at all once they are used up. Examples include fossil fuels like coal, oil, and natural gas.

### Step 2: Analyze the Question
- The question specifies sources of energy that "cannot be replenished with a short period of time or are lost forever." This description aligns with the definition of non-renewable sources.
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