There are an average of __________ WBCs per cubic millimeter of whole blood. 02:34 Biology Chapter 10 There are an average of __________ WBCs per cubic millimeter of whole blood. A) 100-1000 B) 4000-11,000 C) 10,000-20,000 D) 50,000-100,000 E) 1 million-3 million Answer: b Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+