Phosphorus

Those residual ingredients included potassium, rare earth elements, and phosphorus -- collectively known as "KREEP," with the "K" representing potassium's chemical symbol.

The claimants allege pollution has been caused by run-off from farmland containing high concentrations of phosphorus, nitrogen and bacteria from the spreading of poultry manure and sewage bio solids used as fertiliser.

Reed is also expected to confirm aims to cut phosphorus pollution from treated wastewater - which causes algae blooms that are harmful to wildlife - in half by 2028, compared to 2024 levels.

The greens are also rich in Vitamin A, Vitamin B, Vitamin B6 and minerals, including magnesium, phosphorus, iron, calcium and potassium.

The California coastline can experience large-scale blooms of algae called Pseudo-nitzschia australis when warm water combines with excess nutrients such as nitrogen and phosphorus.