Animals Without Backbones - Big Science Ideas
Kalman Bobbie
Publication Date:
4 Jan. 2009
Crabtree Publishing Company
ISBN 9780778732990
Format: Paperback
In Stock: 6.0 Units
Over 98 per cent of Earth's animals are invertebrates. Invertebrates do not have backbones or internal skeletons but some have hard coverings. Insects spiders worms snails and most ocean animals are invertebrates.