Kilobytes Megabytes Gigabytes. The size of information in the computer is measured in kilobytes, megabytes, gigabytes, and terabytes. In this section, we'll look at common sizes you would see in real life, and work some arithmetic. Any thinking person today should have a rough idea of what KB, MB and GB are.
The maximum upper range of human hearing is about 20 kHz for children, declining to 15-17 kHz for middle-age adults. The top end of a dog's hearing range is about 45 kHz, while a cat's is 64 kHz.
Asked by: Janine Kay, by email. Humans can hear frequencies up to about 20kHz, whereas dogs hear up to 45kHz. Almost all mammals have much better high-frequency hearing than other vertebrates - fish, amphibians and reptiles only hear up to about 5kHz, and birds up to 8-12kHz.