g The authors designed a field experiment to test the hypothesis that competitive interactions between the closely related A. segrei (an introduced species) and A. carolinensis (a native species) would cause a change in the perch height of A. carolinensis. What aspects of the experimental design were used to help rule out potentially confounding variables? Select all that apply.

The answer is b. hope this !

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.

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