user61410: One user initiated a closing vote to this question: What are some of the earliest known species on earth that display pecking order?
One user explained that my question is "homework", because "a question that addresses a basic biology concept that may seem trivial to biology professionals".
After a few friendly conversation, that user explicitly admitted that, (as a biology professional,) he does not have full knowledge of some of the foundation works in "pecking order". There is of course nothing wrong with that because no one has the full knowledge on any non-trivial topics. I truly appreciate him for bringing up an unique view-point from a biologist, which is not entire same as other biologists.
I further clarified this is not a homework question. I also explained why the question is asked. Though the question is still closed because of "homework".
If by any chance I could get any help, I will be much appreciated.

user9943: You basically answered the main question in the linked post yourself, since you establish your own 'definition' of pecking order, including everything up to the point of metabolic evolutionary pressure in microbes (I disagree completely, but this field of research is outside of my comfort zone, so I won't argue), hence your answer is to be sought in microbes, and if you like a species name with that, search for 'Archaea', it'll make an interesting read and may lead you to your answer.
However, you also ask whether plants can have a pecking order, as a sort of sub-question. Given your personal definition of 'pecking order' including microbial survival strategies, the answer would be 'yes', namely those that have an [evolutionary] advantage over other species, making them more fit to survive (I again disagree with calling this a pecking order).
What I think is that the real underlying questions are the following:

'Whether evolutionary pressure favoring one species above another can be called 'pecking order' (you know my views by now :-), and/or
'What is the definition of pecking order?'

In other words, I think the question is rightfully put on hold, because you need to flesh out your post. The best way to do that, is by doing your homework, namely carefully defining what it actually is you are struggling with. In other words, help us to help you :) Focus your post on one question, not more. Prevent luring people into a discussion, we have a chat room dedicated to that purpose.
I would encourage you to edit your existing post on this to maintain the post's history together with its comments.

61410: <p>One user initiated a closing vote to this question: <a href="https://biology.stackexchange.com/questions/107546/what-are-some-of-the-earliest-known-species-on-earth-that-display-pecking-order">What are some of the earliest known species on earth that display pecking order?</a></p>
<p>One user explained that my question is &quot;homework&quot;, because &quot;a question that addresses a basic biology concept that may seem trivial to biology professionals&quot;.</p>
<p>After a few friendly conversation, that user explicitly admitted that, (as a biology professional,) he does not have full knowledge of some of the foundation works in &quot;pecking order&quot;. There is of course nothing wrong with that because no one has the full knowledge on any non-trivial topics. I truly appreciate him for bringing up an unique view-point from a biologist, which is not entire same as other biologists.</p>
<p>I further clarified this is not a homework question. I also explained why the question is asked. Though the question is still closed because of &quot;homework&quot;.</p>
<p>If by any chance I could get any help, I will be much appreciated.</p>
 9943: <p>You basically answered the main question in the linked post yourself, since you establish your own 'definition' of pecking order, including everything up to the point of metabolic evolutionary pressure in microbes (I disagree completely, but this field of research is outside of my comfort zone, so I won't argue), hence your answer is to be sought in microbes, and if you like a species name with that, search for <em>'<a href="https://ucmp.berkeley.edu/archaea/archaea.html" rel="nofollow noreferrer">Archaea</a>'</em>, it'll make an interesting read and may lead you to your answer.</p>
<p>However, you also ask whether plants can have a pecking order, as a sort of sub-question. Given your personal definition of 'pecking order' including microbial survival strategies, the answer would be 'yes', namely those that have an [evolutionary] advantage over other species, making them more fit to survive (I again disagree with calling this a pecking order).</p>
<p>What I think is that the real underlying questions are the following:</p>
<ol>
<li>'Whether evolutionary pressure favoring one species above another can be called 'pecking order' (you know my views by now :-), and/or</li>
<li>'What is the definition of pecking order?'</li>
</ol>
<p>In other words, I think the question is rightfully put on hold, because you need to flesh out your post. The best way to do that, is by doing your homework, namely carefully defining what it actually is you are struggling with. In other words, help us to help you :) Focus your post on one question, not more. Prevent luring people into a discussion, we have a <a href="https://chat.stackexchange.com/?tab=site&amp;host=biology.stackexchange.com">chat room</a> dedicated to that purpose.</p>
<p>I would encourage you to edit your existing post on this to maintain the post's history together with its comments.</p>
