How Does the Body Make Blood? By: Janice Creneti Updated on: April 05, 2017 More Articles How to Make a Double Treble Crochet Stitch How to Prune Weigela How to make a Santa Claus hat How to Prune a Grape Vine How to Remove Toilet Seats Related About the Author Janice Creneti has a bachelor's degree in secondary science education and biology from Boston University. She has been teaching for more than 20 years. She currently teaches at Lakewood High School in Tampa, Fla.