It should be Eubacteria o<span><span><span>r
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Pteridophyta </span></span></span> , if I'm not wrong. Animalia has the most.<span><span>
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Well, it seems like a multiple choice question and you didn't provide answers so I took the liberty of looking it up for you. The answer is "Large Evergreen leaves". Hope this helps
The relationship between the bird and tree would be considered commensalism. That's when two organisms both receive an increase because of their relationship.
Hope that helps,
UnicornFudge aka Nadia