Protozoans are classified based on the way that they move. Many Protozoans have advanced evolved Cilia (hair like fibers) or Flagella(a big tail) which help them move.
The U.S.-led invasion of Iraq, commonly known as The Iraq War or Operation Iraqi Freedom, began March 19, 2003. In February 2009, President Barack Obama announced a 16-month plan for withdrawal in Iraq. On June 30, 2009, U.S. troops withdrew from Iraq's towns and cities, formally handing over security duties to new Iraqi forces.
Ten years ago, the U.S. and coalition forces began military action against Iraq, spurring deep divisions in the U.S. and around the world. The official end of the war came December 31, 2011, but thousands of lives have been changed. Explore some of the voices from iReporters, newsmakers, CNN correspondents and others from around the world.