This is a model of the lungs. When you press down on the soda bottle, the balloons fill with air. What is the GREATEST limitation of this model?

A)
It does not show how air enters the mouth.

B)
It does not show exhalation, only inhalation.

C)
It does not show the passageways inside the lungs.

D)
It does not show the other organs in the chest cavity.

the wires in the toaster turning red and the toast crisping and turning brown

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

the supermassive black hole is in the middle of the galaxy.