We can block light by placing obstacles in its path, but it’s much more difficult to block sound. why? a. sound waves are transverse waves. b. sound waves can move through various mediums. c. sound waves have high frequencies. d. sound waves have short wavelengths. e. sound waves have low amplitudes.

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time