Mollusks can be found in virtually every habitat on Earth and range in size from microscopic to more than 10 m long. ----. But others, the octopus for instance, are considered to be delicacies.
A) They are indeed an extremely fascinating group of creatures
B) Not all of them, however, are encased in a shell
C) All the mollusks are invertebrate animals
D) Some, like the snails in our gardens, are regarded as pests
E) The octopus even has problem-solving abilities
kaynak: kpds 2006 mayıs