Many household products we consider necessary today such as AM and FM radios, televisions, wireless networks, cordless and cellular telephones, remote-controlled toys, and GPS receivers use to transmit information to humans all over the world.
A) microwaves
B) radio waves
C) seismic waves
D) infrared waves

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.