'Bodied marine organisms' presentation slideshows

Arthropods

377 views • 25 slides

Unit 9 Chordates

Unit 9 Chordates. Ch. 30 Nonvertebrate Chordates, Fishes, & Amphibians. What Is a Chordate?. A chordate is an animal that has, for at least some stage of its life, a dorsal, hollow nerve cord; a notochord; pharyngeal pouches; & a tail that extends beyond the anus. What Is a Chordate?.

481 views • 22 slides

Evidences of evolution

Evidences of evolution. 1.Paleontology or the Fossil Record. The surface layers have more complex land animals The middle layer early vertebrates and amphibians The bottom layer has simple aquatic organisms. The fossils are formed in sedimentary rock.

495 views • 17 slides