Humans have always wondered about the origin of life. in the past, people believed in spontaneous generation, or the theory that life could arise from non-living matter. this was partly because people did not understand why maggots seemed to emerge from rotting meat without any explanation. then, in 1668, an italian scientist named francisco redi disproved the theory of spontaneous generation by performing an experiment in which he covered a piece of meat, preventing flies from laying eggs there. consequently, no maggots emerged. this experiment shows that

All scientific explanations are tentative and subject to change or improvement

Explanation:

By conducting the experiment, Francisco Redi was able to show that the original theory of spontaneous generation was flawed in the way of it not actually being spontaneous but rather that it was other insects, such as flies, that were laying the eggs..

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.