Which is not a similarity that those with anorexia nervosa and bulimia nervosa share? they are fearful of becoming obese. they both experience substance abuse. they are both sexually experienced. they both have a heightened risk of suicide attempts?

As per studies about anorexia nervosa and bulimia nervosa, the following similar characteristics include being fearful of becoming obese, substance abuse and low self-esteem.  Low self-esteem can result in suicide attempts, therefore; the only dissimilarity among the four choices is “that they are both sexually experienced.” No report is found to match this claim, at the same time, the typical onset of both diseases occur during early teens and late teen years, so they are far from being sexually experienced. 

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a metamorphic rock would be formed.