Phytoplankton, like land plants, require nutrients such as nitrate, phosphate, silicate, and calcium at various levels depending on the species.

浮游植物与陆地植物一样，根据不同种类需要各级的硝酸盐、磷酸盐、硅酸盐以及钙等营养物质。

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Conservative cooking such as steaming or boiling causes only modest loss of some nutrients, such as folate, while enhancing the bioavailability of others, such as carotenoids.

保守烹饪如蒸，煮只造成少量的营养物质损失如叶酸，而加强了对其他物质的生物利用度，如类胡萝卜素。

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However, phytoplankton still require other nutrients, such as iron, to survive.

但浮游植物还需要其他营养物质(如铁)才能存活。

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And dumping nutrients such as iron into the sea would be only one-sixth as effective as either sulphate injection or promoting the formation of clouds.

ECONOMIST: Geo-engineering

For decades, discharges by wastewater treatment plants and land runoff have led to excessive levels of nutrients such as nitrogen and phosphorus in Long Island Sound.

WSJ: Connecticut Seaweed: Life Down on the Kelp Farm

If a person receives too much or too little fluid this can lead to problems such as fluid in the lungs, dangerously raised or lowered levels of potassium, sodium or nutrients such as glucose, and in some cases, heart failure.

BBC: drip bag