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.
Questions & Answers on Bisphenol A (BPA) Use in Food Contact Applications. FDA acknowledges the interest that many consumers have in the safe use of Bisphenol A (BPA) in food packaging. FDA has performed extensive research and reviewed hundreds of studies about BPAâs safety. We reassure consumers that current approved uses of BPA in food containers and packaging are safe. Additional research is underway to enhance our understanding of BPA. FDA will take these studies into account as it continues to ensure the safe use of BPA in food packaging.