So how do you tell the difference between monkeys and apes?The natural world comes alive for young readers (Ages 6-7) with Rookie Read-About RM Science With striking, full-color photos and just the right amount of text, this series immediately involves young readers as they discover intriguing facts about the fascinating world around them.They're both primates. They both have two long arms, two legs, and hairy bodies. One way is to ask yourself...