Speces: The basic dassification in biology that describes a__________ of _________
 that resemble one another and are able to among __________themselves. 
 Variations: A ___________
 in a characteristic of trait from one organisms in a _________ 
 to another organism n the
 species.
 2. Read what Darwin is saying from the bottom of the screen to answer the questions
 below.
 a. Are all members between a species exactly the same?
 b. What are some variations tha ndividuals within a species may have?
 c.
 Can some variations be subtle? Can some be extreme?