[DOC] [TLE] J! Archive - Show #3854, aired 2001-05-10 [PAR] The Douglas type of this 3-letter tree is the state tree of Oregon .... Type of "cord" 
& (in males only) of "sac" that lets the frog croak... [DOC] [TLE] Frog - Wikipedia [PAR] A frog is any member of a diverse and largely carnivorous group of short-bodied, 
tailless ... Warty species of frog tend to be called toads but the distinction between 
frogs and .... However, others have suggested that Gerobatrachus hottoni was 
only a ..... Males have vocal cords and make a range of croaks, particularly in the
... [DOC] [TLE] Chapter 18 by Colin Murphy on Prezi [PAR] Another siren siren Another eft Red eft Seal salamander The aquatic form of a 
salamander is called a ... The central nervous system consists of a brain and a 
spinal cord. ... The frog's croak is produced when exhaled air passes through the 
larynx (or voice box) from the lungs. ... The croak is amplified by a vocal sac in 
males. [DOC] [TLE] Acoustical Society of America - Frog Communication - Acoustics.org [PAR] But when Capranica presented the croaks of 34 other species of frogs and toads, 
not once did ... The small number of sounds a male frog produces has to be 
easily .... A thin-walled sac at the base of the mouth then blows up like a balloon, 
... wall responded to sound, and it was only slightly less sensitive than the 
eardrum. [DOC] [TLE] Essay on Frogs - Biology Discussion [PAR] Rana tigrina is the most widely distributed species in Northern India. ... The male 
frogs croak louder than the females, because in them the pitch of croaking ... Only 
in the male frogs, there is situated on the posterior part of the throat a pair of ..... 
The outer layer of the sac is called parietal pericardium and inner layer is known
... [DOC] [TLE] Engaging with Nature Frogs Teacher ... - naturalresources.sa.gov.au [PAR] Green Tree Frog should not be called a frog (as frog only ... To help the male frog 
maintain his hold on a female, some species develop .... sac in a water-filled 
plant, where the tadpoles hatch out .... Not all frogs go ribbit ... grabbed frog will 
make a release call to let him know that he is wasting his time and should let go. 
In. [DOC] [TLE] African Clawed Frog Development - Kozmic Dreams [PAR] From about 1995 on, I have had the male wild-type xenopus pictured below. ... If 
you let them go outdoors, these frogs will wreak havoc on the environment, 
eating anything and everything they can fit into their ... They were small and white 
and only about 1/4 inch long. ... That yellow thing inside their bellies is the yolk 
sac. [DOC] [TLE] Frequently Asked Questions about Birds - Celebrate Urban Birds [PAR] Birds make tons of different sounds: chirps, rattles, whistles, trills, croaks, 
drumming, and ... Vocal sounds are made by a special organ only birds possess: 
the syrinx. ... The new feathers look bright and attractive and help males attract a 
female. ... In the egg, there is a cord that attaches the developing embryo to the 
yolk sac. [DOC] [TLE] Full text of "The biology of the frog" - Internet Archive [PAR] There are only three genera, two of which, Necturus and Typhlomolge, are 
confined ..... In Hyla and its aUies the vocal sac of the male is capable of great 
distension, and ..... In the summer, however, it is not unusual to hear the croaking 
of frogs, ...... and forms the brain, the remaining portions developing into the 
spinal cord. [DOC] [TLE] Sex and Art - JStor [PAR] on the contrary, a portion only of the body is usually sacrificed, .... Erethism of any 
kind in both male and female represents a katabolic crisis .... dislocation of the 
cervical cord. ..... apparatus. " Among frogs and toads it is principally the male 
which croaks. .... lets his excrement fall plentifully, grasps in the air with one or the
. [DOC] [TLE] Wikipedia Terms - Princeton University

Question: Type of "cord" & (in males only) of "sac" that lets the frog croak
Answer: vocal