Ocean thermal energy conversion (OTEC) uses the temperature difference between cooler deep and warmer shallow or surface seawaters to run a heat engine and produce useful work, usually in the form of electricity.
Abiotic examples include things that are not alive but you will find in an ecosystem such as air, gases, water, sand, stones and rocks.
Abiotic component - See also. 1  Biotic component, a living part of an ecosystem that affects and shapes it. 2  Abiogenesis, the transformation of non-living into living matter. 3  Nitrogen cycle. 4  Phosphorus cycle.