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Percentage of nitrogen from various fertilizer sources
Man's hand is sowing fertilizer. Important steps to take care of plants.
Hearts and test tube. Baby from tube vitro glass. Artificial insemination, IVF. Gray background
Farmer fertilizing arable land in spring
Gymnosperm vs angiosperm vector illustration. Labeled educational scheme with plants fertilization style and differences. Pine versus flower diagram and inner inside structure explanation graphic.

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