Answer:
the tube allow the plant to absorb sunlight for photosynthesis
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It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates and the way that these two molecules differ from each other is that, t<span>estosterone and estradiol have different functional groups attached to the same carbon skeleton. Hope this helps.</span>
Answer:
A
Explanation:
i guessed ona quiz and got it right.