ANN PICKFORD / SCIENCE PHOTO LIBRARY ANN PICKFORD / SCIENCE PHOTO LIBRARY
Mixed nuts. Selection of walnuts (Juglans regia, upper left), Brazil nuts (Bertholletia excelsa, upper right), hazel nuts (Corylus sp., lower left), pecan nuts (Carya pecan, across centre), and almonds (Prunus amygdalus, lower left and lower right). Nuts are a healthy source of protein, vitamins and minerals.
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