Which of the following alternative energy sources is not inexhaustible?

### Geothermal energy

## Step1: Understanding the Concept of Inexhaustible Energy Sources### Inexhaustible energy sources are those that are not depleted when used. They are also known as renewable energy sources. These include solar, wind, hydro, biomass, and tidal energy. They are considered inexhaustible because they are naturally replenished on a human timescale.## Step2: Identifying the Nature of Geothermal Energy### Geothermal energy is the heat from the Earth. It's clean and sustainable. It is considered a renewable source of energy because the heat emanating from the Earth's interior is essentially limitless and is expected to remain so for billions of years. However, in certain geographies, geothermal energy can be depleted if it is extracted faster than it is replenished naturally.## Step3: Comparing Geothermal Energy with Other Renewable Sources### When we compare geothermal energy with other renewable sources like solar, wind, hydro, biomass, and tidal energy, we find that all these sources are naturally replenished and virtually inexhaustible. However, geothermal energy can potentially be depleted in certain locations if it is extracted faster than it is replenished naturally.