The audible range of sound for human being.

The audible frequency range of human ear is 20 Hz and 20 kHz. The corresponding wavelength range is [speed of sound in air = 340 m/s]

The audible range of sound is 20 Hz to 20000 Hz. At 22^@C in airspeed of sound is 344 m//s .Express the range of sound in terms of wavelength by calculating the respective values.

Answer the following questions: Read the following sequence of events and answer the questions based on the same. Ranjit saw that the dog sitting by his side had suddenly become alert. In a short time, Ranjit heard footsteps of a man and the stranger approached Ranjit. Rajit now understood why the dog had suddenly become alert. What is the difference between the audible range of sound for Ranjit and the dog?

Vertebral formula for human beings is

Nature is the closest frined of human being.

Find out the inheritance pattern in blood groups of human beings.

Prepare a list of some animals that are found parasitic on human beings.

One word in the following sentences is wrong. Change it to make the sentences correct : Transmission of swine flu is done by dogs to human beings.

The normal hearing range for humans is ………… .