"Use this short exercise to sharpen your skills and improve your understanding of mitosis and meiosis. You'll find 15 questions, plus detailed answer explanations that will walk you through the specifics of each process." --

A lieutenant's gripping, personal account of the legendary U.S. Army's 10th Mountain Division's heroic stand in the mountains of Afghanistan--a vivid, action-packed, and highly emotional true story of enormous sacrifice and bravery.

"The First Calvary Division came under surprise attack in Sadr City on Sunday, April 4, 2004. More than seven thousand miles away, their families awaited the news for forty-eight hellish hours -- expecting the worst. In this powerful, unflinching account, Martha Raddatz takes readers from the streets of Baghdad to the home front and tells the story of that horrific day through the eyes of the courageous American men and women who lived it." -- Back...

One day Ana visits her friends, Brad, and together they bake two pizzas. When their friends stop by to visit, they must divide up the pizzas evenly.