^^
18.
Nothing can be checked out or renewed without it. If you reside in this area, you may get it free of charge. Kids under 18 need their parent’s signature on the registration form to receive it. The standard loan period is 21 days. Books can be renewed once for the original loan period unless they are on reserve. Videos and DVDs can be loaned for 2 days and cannot be renewed. Borrowers are responsible for returning items on time and in good condition.
19.
Not only does the ‘leaf fish’ look like a leaf, but it also imitates the movement of a drifting leaf underwater. Its hunting technique is not to swiftly pursue its victim, but to wait for it. Hanging at an angle in the water, the leaf fish is carried along by the currents until it comes near a smaller fish. Then, it seizes the unsuspecting prey with a lightning-fast snap of the jaws, and swallows the prey down head first. At close range the rapid opening of the leaf fish’s large jaws enables it to suck in the unfortunate individual very easily.
20.
When one group borrows something such as ideas, values, foods, or styles of architecture from another group, change occurs through diffusion. Diffusion is a process by which one culture or society borrows from another. The extent and rate of diffusion depend on the degree of social contact. The more contact a group has with another group, the more likely it is that objects or ideas will be exchanged. The exclusion of new technology generally leads to social change that will soon follow. Social contact, therefore, plays a crucial role in the process of diffusion.
