What role do organisms, such as bacteria or fungi, that feed on and break down dead plant or animal matter and make nutrients available play in an ecosystem?
producers
predators
decomposers
consumers
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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.

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.

the correct answer is: " ventricles " .

{source: refer to text within question.}.

z is the answer.

(sorry caplock) lol

                                                happy valentines