A19-year-old woman has painful ulcers on the labial mucosa and buccal mucosa of 4 days duration. she has had similar ulcers on previous occasions, and each time the lesions healed in approximately 7 days. the best diagnosis is

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is

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.