Final answer:
Wave and tidal energy projects rely on external energy sources due to the Law of Conservation of Energy in systems.
Explanation:
Wave and tidal energy projects are made possible by the Law of Conservation of Energy. In an isolated system where no energy exchange occurs, such as the ocean alone, these projects might not be feasible as energy cannot be replenished.
Since wave and tidal energy require energy input from external sources like the gravitational pull of the sun and moon, an isolated system lacks this necessary exchange of energy and matter to sustain such projects.
Therefore, the availability of external energy sources is crucial for wave and tidal energy projects to function, showcasing the significance of the Law of Conservation of Energy in such systems.
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