11.3 Determine the molecular mass of a compound from the molecular ion peak [SL IB Chemistry]
Because the catfish has whiskers just like a pet cat does. Because the catfish has whiskers just like a pet cat does.
Learn more about this article. The annelids (Phylum Annelida) are also called the segmented worms due to their segmented bodies. This group includes the most familiar of all invertebrate worms.Earthworms, freshwater worms, leeches, and marine worms are all annelids.This group is also called bristle worms because most annelids have tiny chitinous bristles called setae. The setae help terrestrial annelids grip their surroundings, and they aid aquatic forms with swimming.arthworms, freshwater worms, leeches, and marine worms are all annelids. This group is also called bristle worms because most annelids have tiny chitinous bristles called setae. The setae help terrestrial annelids grip their surroundings, and they aid aquatic forms with swimming.