Grapefruit is oblate in shape, ranges in diameter from 3 to 5 inches and can weigh up to 150 g. Characteristically, it has thick, tough skin than that in the oranges. Inside, the fruit is segmented into arils as in other citrus fruits.
Nacre (/ËneÉªkÉr/ NAY-kÉr also /ËnÃ¦krÉ/ NAK-rÉ),[1] also known as mother of pearl, is an organic-inorganic composite material produced by some molluscs as an inner shell layer; it also makes up the outer coating of pearls. It is strong, resilient, and iridescent.
Definition of Na (sodium) Na (sodium): Na is the chemical symbol for sodium. From natrium, a synonym for sodium. Sodium is the major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+. When combined with chloride (Cl), the resulting substance is table salt (NaCl). Excess sodium (such as from fast food hamburger and fries) is excreted in the urine.