anonymous
  • anonymous
http://prntscr.com/7dkdd3 Graph Analysis. Will Medal + Fan
Biology
chestercat
  • chestercat
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whpalmer4
  • whpalmer4
Well, organisms doing respiration take in oxygen and produce carbon dioxide, right? And organisms doing photosynthesis take in carbon dioxide and produce oxygen?
anonymous
  • anonymous
Yes. Would you like me to explain my understanding of the Q, too?

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whpalmer4
  • whpalmer4
what would the graph look like if the two were exactly in balance?
whpalmer4
  • whpalmer4
(and nothing else was changing the amount of carbon dioxide present)
anonymous
  • anonymous
A balance between oxygen/photosynthesis/respiration?
anonymous
  • anonymous
Wouldn't the graph just be a straight line?
whpalmer4
  • whpalmer4
we would have a horizontal line, right?
anonymous
  • anonymous
Yes :)
whpalmer4
  • whpalmer4
glad we are in agreement. But we don't have a horizontal line, we have something that is gradually increasing, and not as a straight line, either. What does that suggest to you?
anonymous
  • anonymous
It means that they are unbalanced, correct?
anonymous
  • anonymous
Or one is more than the other
whpalmer4
  • whpalmer4
yes. and is the carbon dioxide concentration in the atmosphere increasing or decreasing?
anonymous
  • anonymous
Definitely Increasing
whpalmer4
  • whpalmer4
if we want to keep the carbon dioxide concentration about the same, do we need to plant more forests, or chop them down?
anonymous
  • anonymous
Plant more forests because they produce oxygen and take in CO2 via photosynthesis.
whpalmer4
  • whpalmer4
right. there are some who think we should repeatedly plant forests and chop them down, burying the results, but that seems a bit impractical to me!
anonymous
  • anonymous
I agree...
whpalmer4
  • whpalmer4
so, looking at the graph, which class of organism is expanding more rapidly?
whpalmer4
  • whpalmer4
relative to the other, I guess
anonymous
  • anonymous
It would be whatever organism that produces carbon dioxide. (What is their class called?)
anonymous
  • anonymous
Aren't there other factors such as pollution that contribute to the rapid increase of Co2 in the atmosphere though?
whpalmer4
  • whpalmer4
yes, but the problem asks for the relationship between the respiring and photosynthesizing organisms
anonymous
  • anonymous
Okay. Would you like me to share my notes with you on this lesson? You can use it as a reference to your answers?
whpalmer4
  • whpalmer4
so, it looks to me like the plants are not keeping up with the carbon dioxide entering the atmosphere. sure, go ahead...
anonymous
  • anonymous
http://prntscr.com/7dkudo
anonymous
  • anonymous
http://prntscr.com/7dkuol It's a little long, but those are just the notes that are relative to answering the question(s).
anonymous
  • anonymous
…I have very limited time to complete this homework assignment and I'm not sure if you're reading the notes or multitasking @whpalmer4 :) I don't mean to have that come out as rude or disrespectful because everything you've told me so far has truly helped me understand the concept a little better.
whpalmer4
  • whpalmer4
well, a bit of both. I think the graph shows that the photoautotrophs are not keeping up with the amount of carbon dioxide being produced. I don't know what to conclude from the graph about the effects, other than something will change — perhaps the plant life is going to grow like crazy in the CO2 rich air, but it seems like that probably isn't it (it's not like they are stripping the atmosphere of all of its CO2 now, right?) And my understanding is cyanobacteria produce their energy by photosynthesis, so if their population goes up, the carbon dioxide concentration curve should stop increasing as rapidly as it is That's about all I got for you...
anonymous
  • anonymous
Do you have anything to add to this?
anonymous
  • anonymous
Or do you agree/disagree? What are your thoughts? @whpalmer4
whpalmer4
  • whpalmer4
No, I don't, other than to caution that you might have to go pretty far to get to the point where either class had trouble breathing...
anonymous
  • anonymous
True, and it is around a specific area anyway. But I think they're asking worst-case scenarios? I'll be sure to mention that, too. Thank you so much for your help! :)
whpalmer4
  • whpalmer4
worth about as much as you paid for it, I fear :-)

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