Which layer of earth acts as a very effective “insulator,” because it’s made of rock? mantle crust outer core inner core

Correct Mantle

Earth is composed of three layer called as crust, mantle,core. Crust is the outer layer of the earth and mantle is the middle layer and core is known as the inner layer of the earth surface.

Mantle is a layer which found in between the crust and core, it is made up of silicate rocky shell with a thickness of 2886 kilometers. It covers the 84% of the earth's volume.

The mantle layer of earth encompasses core layer of the earth which is made up of iron and nickel which covers 15% of the earth's volume. Mantle layer of the earth trap the heat which is being generated inside the core layer of the earth and act as a insulator.

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.