Which of these fuels is not formed from the remains of dead plants and animals, over millions of years, beneath the surface of the earth?

Options

A. Coal
B. Wood
C. Petroleum
D. Natural gas

Answer

To determine which fuel is not formed from the remains of dead plants and animals, we need to understand the origins of different types of fuels. Here’s a step-by-step solution:

### Step 1: Identify the types of fuels
Fuels can be categorized into two main types: fossil fuels and non-fossil fuels. Fossil fuels include coal, oil, and natural gas, which are formed from the remains of ancient plants and animals.

### Step 2: Understand fossil fuel formation
Fossil fuels are formed over millions of years through geological processes. When plants and animals die, their remains can become buried under layers of sediment. Over time, heat and pressure transform these remains into fossil fuels.

### Step 3: List common fuels
Common fuels include:
- Coal
- Oil (petroleum)
- Natural gas
- Biomass
- Nuclear fuel
- Hydrogen

### Step 4: Identify non-fossil fuel
Among the listed fuels, biomass (which comes from living or recently dead organic material) is also derived from plants and animals, while nuclear fuel (like uranium) and hydrogen are not formed from organic remains.

### Step 5: Conclusion
Thus, the fuel that is not formed from the remains of dead plants and animals is **nuclear fuel** (like uranium).

### Final Answer
Nuclear fuel is not formed from the remains of dead plants and animals over millions of years beneath the surface of the earth.

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