Prions are are thought to cause disease by
a) rna molecules encoding toxic proteins
b) an abnormal type dramatically enhancing the rate of viral nfection
c) dna molecules .. jumping around the genome and mutating genes
d) mutant dna toxic proteins
e) abnormally shaped inducing similar but normally shaped proteins to the brain to adopt the abnormal form

E) Abnormally shaped proteinsinducing similar but normally shaped proteins to the brain to adopt the abnormal form

Explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.