gather+and+process+information+from+secondary+sources+to+outline+and+compare+some+of+the+structures+used+by+animals+other+than+humans+to+produce+sound

Animal  || Frequency range || medium || Structure || Fish || Low Frequency ||   water  || -Rubbing there teeth/bones together. - the contraction of muscles that change the volume of the bladder to produce  Sounds, creates crunching and popping sounds. || Cricket  || High frequency ||   Air  || -Rubbing structures on there wings together to make sound. || frogs  || Tuned frequency ||   Air  || -Male frogs Croak, The sound is created in there vocal sacs and mouth cavities. - like most vertebrates frogs create sounds when air from the lung is forced down the vocal cords causing them to vibrate. || Birds  || High frequency ||   Air  || -They use and organ called syrinx -It is located in the trachea which is next to the two bronchi branch off. || Bat  || High frequency ||   Air  || They use echolocation to find objects in their environment. which involves discharged ultrasounds. -  These waves bounce off solid objects and return as an echo to the bat’s ear. -  Bats have huge pinnae to collect echoes and goes into there ears. ||