1. Unit 2: Remarkable Living Things Theme 3: So Many Kinds of Animals http://s3.amazonaws.com/readers/2009/04/06/1141720039a467430c0_1.jpg

2. variety- an assortment of more than one kind If you have a variety of fruits, you have several different kinds of fruit. http://images2.fanpop.com/images/photos/6300000/Variety-of-Fruit-Wallpaper-fruit-6333847-1024-768.jpg

3. species- describes a group of plants or animals Some plants and animals are on the endangered species list for fear of becoming extinct. http://www.cites.org/I/news/2004/cop13_species.jpg

4. researchers- people who investigate certain topics by studying facts There is a controversy between researchers who disagree about the cloning of Dolly, the sheep. http://newsroom.ucla.edu/portal/ucla/artwork/4/5/1/3/9/45139/Yaghi-Researchers_34-prv.jpg

5. abandon- to leave it alone People and animals may abandon their homes if they are scared. http://www.scdf.gov.sg/images/community_volunteer/learncd/peacetime/floods/abandon.jpg

6. definite- certain or exact It is definite that a liquid can take the shape of its container. http://www.dmturner.org/Teacher/Pictures/liquid.gif

7. characteristic- something that is typical of an animal or a group of animals The giraffe’s neck is an unmistakable characteristic of its species. http://www.animalcorner.co.uk/wildlife/giraffes/graphics/giraffeanat.jpg

8. identify- to recognize what something is The officer was able to identify the car by the dent in the driver’s side door. http://roadsafety.co.za/wp-content/uploads/2009/12/traffic-enforcement.jpg

9. categorize- to put items in groups of similar things Solitaire is a game where a player has to categorize the cards according to the correct suite. http://scrapetv.com/News/News%20Pages/Everyone%20Else/images-3/computer-solitaire.jpg

10. invertebrate- an animal that does not have a backbone, or spine Of the million or more animal species in the world, more than 98% are invertebrates. http://www.infc.ulst.ac.uk/computing/stepup/animalkingdom/Images/invert.g if

11. vertebrate- an animal that has a backbone Vertebrates include fish, amphibians, reptiles, birds, mammals, primates, and rodents. http://media-2.web.britannica.com/eb-media/46/93546-034-F9C81CA9.jpg