Which one is not characteristics of sustainable energy?*2 pointsreplenishableclean energyexhaustibleaffordable

To determine which option is not a characteristic of sustainable energy, let's analyze each provided choice:

1. Replenishable: Sustainable energy sources, such as solar, wind, and hydro, are renewable and can be replenished naturally. This is a characteristic of sustainable energy.

2. Clean Energy: Sustainable energy typically produces little to no pollution, thereby contributing to a cleaner environment. This is also a characteristic of sustainable energy.

3. Exhaustible: This term refers to resources that can be depleted and are not sustainable in the long term. Sustainable energy is inherently designed to be non-exhaustive, as it relies on sources that can continuously regenerate.

4. Affordable: While sustainable energy can be cost-effective, this is more about economics and accessibility rather than a direct characteristic of sustainability itself.

Final Answer

The option that is not a characteristic of sustainable energy is exhaustible.