When materials diffuse across a membrane, they move from an area of concentration toan area of concentration along the concentration gradient.?

When materials diffuse across a membrane, they move from an area of high concentration toan area of low concentration along the concentration gradient.

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explanation:

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.