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Sound wave is an another example of longitudinal wave. Sound wave is a vibration that is transmitted through a medium, such as air, water, and metals. Ultrasonic wave is defined as “inaudible sound with high frequency for human” the frequency of which generally exceeds 20 kHz. These days, sound wave which is not intended to be heard is also called ultrasonic wave.
On the off chance that somebody was thinking about on whether to have youngsters or not on account of one individual has sickle cell weakness and another is a bearer, the hereditary qualities advocate could run these counts and educate the guardians of the shot of their kids would sickle cell anemia.
The statement above is TRUE.
The osteon is the fundamental functional unit of a compact bone. Osteons are roughly cylindrical in shape and they are typically several millimetre long and about 0.2mm in diameter. The osteon resembles the growth ring of a tree trunk.
The cylindrical structure of osteon is made up of four different parts which are a central tube, a lamellae, a lacunae and canaliculi.
