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Final-Fan said:

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. 

3. Decomposers don't eat predators. They eat carcases.I was also thinking more of a pyramid.

4. I don't uderstand where you got the ideea that I don't consider humans to be part of nature. You not only cannot read, you are also incredibly rude. Hoesntly, why do I even waste my time with an individual like yourself, I do not know.

5. Plants DO produce more oxygen than algae  And the algae population wouldn't boom, because they'd become the chief resource of food.

(PS: Green algae are considered to be plants )



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