During embryological development, the anus forms before the mouth in . View Available Hint(s)for Part A Molluscs Annelids and Molluscs Annelids Chordates Molluscs and Chordates

Organisms within a population must compete for resources to survive

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone