What are the properties of epithelial tissue?

Epithelial tissue is a very thin type of tissue.

Explanation:

Epithelial tissue is a very thin type of tissue found in mostly invertebrates ( example: Phylum Cnidaria) Organisms that possess this tissue typically don't require respitory systems. This is due to epithelial tissue being so thin that gases diffuse through it. This is how these organisms breathe, they exchange gas with their surrondings.  Gas diffuses right through their skin, and therefore they breath via diffusion.

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.  

what school and grade?