Energy that takes a long time to replace / produce.

• A. Renewable Energy
• B. Non-renewable energy
• C. Solar Energy
• D. Wind Energy

Answer: (B)

The concept being tested is how quickly energy sources can be replenished. Non-renewable energy sources form over extremely long timescales—millions of years—so once they’re used, new supplies aren’t produced within human timescales. That makes them effectively slow to replace and finite. Examples include fossil fuels like coal, oil, and natural gas, as well as uranium for nuclear power. In contrast, renewable energy sources are replenished quickly by natural processes; solar energy comes from the sun and wind energy from atmospheric movement, which Continuously supply energy on human timescales. That’s why the energy type described as taking a long time to replace or produce is non-renewable energy.