Bridget Anderson
Author
Pub. Date
2003
Accelerated Reader
IL: MG - BL: 6.8 - AR Pts: 1
Description
If you are asked to picture an animal, odds are that you will think of a dog, bird, coe, etc. We are most familiar with animals that have a backbone. But they make up only 5% of all animals. The other 95% are animals without backbones - invertebrates: spiders, sea urchins, even slugs.