Please examine the following text format and answer if it is an example of compare/contrast or cause/effect. Briefly explain the reason for your answer. Both geckos and tree frogs can climb up almost any surface, and their feet never lose their stickiness. The secret to sticking, however, is different for each. Geckos rely on superfine hairs split even finer at their tips. These incredibly fine hairs create a molecular attraction with the surface they are climbing. Tree frogs, on the other hand, have microscopic channels in their feet which prevent cracking and which also contain an adhesive fluid.