European Diseases: The diseases brought to this continent by the Europeans included bubonic plague, chicken pox, pneumonic plague, cholera, diphtheria, influenza, measles, scarlet fever, smallpox, typhus, tuberculosis, and whooping cough.
Silverfish are sometimes mistaken for centipedes, which do inflict painful bites. One way to tell the difference is to note how many legs the bug has. Upon close inspection of a silverfish, youâll see that it only has six legs. o Silverfish are small insects (between 1/4 inch and 1/2 inch) and have shimmering, silver-colored scales.
Like most fishes, sharks have two sets of paired fins (pectoral and pelvic, corresponding to arms and legs in humans) but-unlike those of bony fishes they are supported by soft, unsegmented rays called  ceratotrichia  (used in making shark-fin soup).ike most fishes, sharks have two sets of paired fins (pectoral and pelvic, corresponding to arms and legs in humans) but-unlike those of bony fishes they are supported by soft, unsegmented rays called  ceratotrichia  (used in making shark-fin soup).