What did chargaff discover while studying bases in the dna of organisms

Chargaff discovered two rules while studying bases in the DNA of the organisms. These rules are as follows-

1) In a DNA molecule, total number of adenine is equal to the number of thymine. Similarly, the number of guanine is equal to the number of cytosine. This gave hint about the base pair makeup of the DNA.

2) The amount of these bases that is A, T, C, and G vary from one species to another species. This gave hint about the genetic material of the organism, which is DNA rather than proteins.  

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 correct option is option d