The oxygen end of the molecule has a slight negative charge, and the hydrogen end has a slight positive charge. Adjacent water molecules are joined by ______ bonds. Relative to a pH of 6, a pH of 4 has a ______.
Maca redirects here. For other uses, see Maca (disambiguation). Lepidium meyenii (maca) is an herbaceous biennial plant of the crucifer family native to the high Andes of Peru. It was found at the Meseta de BombÃ³n close to Junin Lake in the Andes. It is grown for its fleshy hypocotyl (a fused hypocotyl and taproot), which is used as a root vegetable and a medicinal herb.
Just like the red and yellow maca varieties, black maca is also believed to offer great help in boosting fertility and enhancing sex drive. In some South American countries, black maca is also useful in boosting digestion and general mood of an individual.