<p> Mollusks & Annelids</p><p>A. Web site name : BBC News Web URL : http://news.bbc.co.uk/2/hi/uk_news/northern_ireland/2039580.stm</p><p>Read “Scientists fight back against killer worm”</p><p>1) The flatworm was originally from which country?</p><p>2) Why are fishermen concerned about the spread of this flatworm?</p><p>3) What evidence is there for damage to soil quality caused by the loss of earthworms?</p><p>4) How could the Tasmanian gnat help?</p><p>5) What “gnat problem” do you think you could end up with?</p><p>6) How did the flatworm arrive in Belfast?</p><p>7) Is the spread of the flatworms deliberate or accidental?</p><p>8) How much did grass yields increase in New Zealand when earthworms were introduced?</p><p>9) Overall, do you think it is a good idea to introduce species from one part of the world into a new area? Briefly explain your answer. B. Web site name: Monterey Bay Aquarium</p><p>Web URL: http://www.montereybayaquarium.org/animal-guide/octopus-and-kin/chambered-nautilus</p><p>Read “Chambered nautilus”</p><p>10) How long has this species existed?</p><p>11) What is unusual about its tentacles?</p><p>12) Why does it stay deep underwater during the day?</p><p>13) How does the nautilus control the direction that it swims?</p><p>14) What is its diet?</p><p>15) Why does this aquarium not sell sea shells?</p><p>16) How many chambers in it is shell does an adult nautilus have?</p><p>17) How does a nautilus control its buoyancy?</p><p>18) What is odd about their gender ratio?</p><p>C. Web site name: Jacksonville Shell Club</p><p>Web URL: http://www.jaxshells.org/danger.htm</p><p>Read “Danger! Snail on the prowl”</p><p>19) What is the scientific name of the Rosy Wolfsnail? 20) Why is it unusual?</p><p>21) Where and why were they introduced to islands?</p><p>22) What problems did the introduction of these snails cause in Hawaii?</p><p>23) Are these snails common or rare in northeast Florida?</p><p>24) What is their “mating ritual”?</p><p>25) What is their favorite prey of these snails in captivity?</p><p>26). What can the snail eggs be mistaken for?</p><p>D. Web site name: BBC news</p><p>Web URL: http://news.bbc.co.uk/2/hi/health/4327204.stm</p><p>Read “Snails’ pace “clue” to behavior.</p><p>27) Why are scientists studying snails?</p><p>28) Where are “basic level” neurons found in humans?</p><p>29) What is the function of “pattern generator” circuits?</p><p>30) What type of behavior in Aplysia was studied? 31) What human applications does this work have?</p><p>E. Web site name: Cephalopod page</p><p>Web site address: http://www.thecephalopodpage.org/</p><p>Read “Introduction to the Cephalopods”</p><p>32) What is one difference between the bivalve molluscs and cephalopods? </p><p>33) Which cephalopods have no shell at all? </p><p>Click on “Cephalopod Species” near the top of the page</p><p>Click on two species from two different orders.</p><p>34) Give the names of the two species, and some information that you have found out about these species :</p><p>Go to: http://www.thecephalopodpage.org/behavior.php and read about behavior.</p><p>35). What are three interesting things you have found out about octopuses? </p>