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sapphi_snake said:
Final-Fan said:

3.  If you want to play it that way, basing your argument on the fact that a food chain goes like 1-2-3 corn-cows-humans, then I could easily argue that getting rid of corn would not doom humans (although it would hurt us).  Your extrapolating that into ALL POSSIBLE PLANT LIFE and still only humans on the other end is what makes you silly. 
4.  Yes, really.  The fact that we prop up the corn food chain for our own benefit is irrelevant to the fact that it is still a food chain.  Just because it would collapse if we disappeared doesn't matter.  "Don't deserve" has nothing to do with the matter at hand. 
5.  There are differing opinions on the amount.  I found data indicating that it's 50% of total photosynthesis instead of 75% of total oxygen supply (including absorption and waterfalls/waves/etc.).  And if all the plants disappeared I bet algae would pick up a lot of the slack; of course there would still be a massive animal holocaust. 

3. Corn does not occupy an entire level of the food chain by itself (being domesticated it would be hard to put corn on any level of the food chain BTW). Getting rid of an entire level would possibly doom us, but not just one part of that level, because there would still be other lifeforms on that level (humans occupy an entire level by themselves).
4. What's a "corn food chain"? There's only one food chain (that of Earth), and it's hard to find a place for corn on it. The fact that corn isn't really a prodcut of nature of also quite important.
5. 50% of photosynthesis does not imply 50% oxygen supply. Plants are the chief producers of algae. IF plants disappeared, algae could not pick up the slack for them (unless their populations increased by 75%, which is unlikely, as they would become a huge source of food for aquatic life, and would actually get eaten much quicklier).

3.  A food chain is technically a linear progression of ONE species eating ONE other species until you get to the top where nothing normally kills and eats the hawk or the human or whatever.  A food WEB is more what I think you are thinking, like a food chain only showing more stuff, which could potentially be all the creatures on Earth.  Of course, food webs ignore decomposers that eat all the already dead stuff including the top predators. 

4.  See 3.  A corn food chain goes, Corn--humans (we prop it up by making sure the corn grows and not letting other things eat the corn) or corn--cows--humans (ditto the cows).  The fact that we prop them up does not make them not food chains. 

I would now like to reiterate that the fact that you do not consider us part of "nature" is validating Kasz's point.  Unless you choose to argue that it simply proves you are biased and uneducated and therefore automatically assume human superiority

5.  a.  I know that.  50%P is LESS THAN 50%O, and 50%P cannot POSSIBLY be 75%O, therefore there are wildly varying estimates of that figure, which was my point. 
b.  Plants are not the chief producers of algae, and may or may NOT do more photosynthesis (and therefore produce more oxygen) than algae. 
c.  If plants disappeared, algae would face much less competition, the algae population might well explode unless as you say animals kept it down too much to do so. 



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