A snake has no ear but it perceives sound through

Snake produces hissing sound through

Snake produces hissing sound through

Snake produces hissing sound through

Snake produces hissing sound through

Pressure tissue vibrations and tension are perceived through

Pressure tissue vibrations and tension are perceived through

Pressure tissue vibrations and tension are perceived through

About how many times more intense will the normal ear perceiver a sound of 10 ^(6) W //m^(2) than one of 10^(9) W//m^(2) ?