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.
All species of toothed whales hear best at higher frequencies (10 kHz to 110 kHz). New technologies, including portable systems, are allowing scientists to measure an animalâs hearing in as little as 45 minutes. Studies can now be done on animals in the wild.