Final answer:
The passage is structured using a compare and contrast format, as it delineates the differences and similarities between roller skating and ice skating, including the skates used and the surfaces suitable for each activity.
Step-by-step explanation:
The passage discusses the differences and similarities between roller skating and ice skating, providing details on the equipment used for each and the conditions necessary for participation in these activities. The structure used in the passage is compare and contrast, as it directly examines the characteristics of roller skates versus ice skates, and presents the distinctions between skating on smooth surfaces and on ice.