Uranium extraction from seawater: Uranium is most often mined from the Earth's crust, but it can also be extracted from seawater, which contains large quantities of uranium<span> (3.3 ppb, or 4.6 trillion kg). Theoretically, that amount would last for 5,700 years using conventional reactors to supply 15 TW of power.</span>
Due to less food energy because biotic are that primary source
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Due to the lack of variety. the potato’s were vulnerable to disease.
