Why do the number of organisms in a group change from the first step to the last step of a dichotomous key?.

emerald ash borer

the emerald ash borer is a green buprestid or jewel beetle native to north-eastern asia that feeds on ash species. females lay eggs in bark crevices on ash trees, and larvae feed underneath the bark of ash trees to emerge as adults in one to two years. hope this !

enzyme speed up the reactions

the answer is b.) hydrogen bonds between bases.

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