Vicky is presenting his research on echinoderms. how should he explain the water vascular system a)it draw water into the siphon b)it draws water into the tube feet, which in locomotion c)it expand the body size, which in molting d)it the process of filter feeding

Models are non-visual ways of coummincating how someone thinks about something in the natural world

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16