History of the Universe eBook. 398 pages, 300 illustrations only £5.99
WormsThere are several different groups of animals which we call worms. Most of them are not closely related to each other. The main groups are: Platyhelminths (flatworms) Annelids (segmented worms) Nemertea (ribbon worms) Aschelminthes (roundworms, pinworms, eelworms, threadworms, hairworms, etc.) Sipuncula (peanutworms) Echiura (spoonworms) Acanthocephala (spiny-headed worms) Pogonophora (beardworms) Chaetognatha (arrowworms)
History of the Universe eBook. 398 pages, 300 illustrations only £5.99 |
eBook only £5.99 398 pages, 300 images "I find the science fabulous...an extremely useful teaching tool." Professor David Christian. Follow @WykenSeagrave |