remarkable changes in form, structure, growth habits, and even mode of reproduction in Line becoming adapted to a different climatic envi-ronment, type of food supply, or mode of living. This divergence in response to evolution is commonly expressed by altering the form and function of some part or parts of the organism, the original identity of which is clearly dis-cernible. For example, the creeping foot of the snail is seen in related marine pteropods to be modified into a flapping organ useful for swimming, and is changed into prehensile arms that bear suctorial disks in the squids  and other cephalopods. The limbs of various mammals are modified according to several different modes of life for swift running (cursorial) as in the horse and antelope; for swinging in trees (arboreal) as in the monkeys;  for digging (fossorial) as in the moles and gophers; for flying (volant) as in the bats; for swimming (aquatic) as in the seals, whales, and dolphins; and for other adaptations. The structures or organs that show main change in  connection with this adaptive divergence are commonly identified readily as homologous, in spite of great alterations. Thus, the finger and wrist bones of a bat and whale, for instance, have virtually nothing in common  except that they are definitely equivalent elements of the mammalian limb.
Directions: For the following question, consider each question separately and select all that apply.

The author provides information that would answer which of the following questions（）