Iron deficiency causes the body to lack enough healthy red blood cells because it cannot produce sufficient hemoglobin to carry oxygen, which most commonly leads to iron-deficiency anemia.

• Macrame: Uses square knots and half hitches tied by hand with cords or yarns.
• Crochet: Uses a hook to interlock loops of yarn.
• Needlepoint: Uses a needle to stitch thread through a stiff canvas mesh (a form of embroidery, not knotting).

Cigarette lighters typically use butane (or isobutane) gas for modern gas lighters, or naphtha (refined petroleum distillate) for traditional wick-based lighters like Zippos.