<p>Wait, does anybody remember the question about the trees with the graphs? I tried to see if I answered it right, but the answers…are stated in a confusing manner.</p>
<p>I cant remember the question and therefore, I can’t remember the answer.</p>
<p>I’m going crazy!</p>
<p>sorry people, 57 is a different question, moist membranes was the answer to another question</p>
<p>whats wrong with dry membrane?</p>
<p>Oxygen must be dissolved in water before animals can take it up. Therefore, the respiratory surfaces of animals (gills, lungs, etc.) must always be moist. This is true of all animals.</p>
<p>Water and C02 can’t transfer out of the thing if its dry. There needs to be water…Kinda like cohesion and stuff.</p>
<p>I don’t know; thats what I remembered and I’m pretty sure that’s the answer. :)</p>
<p>and why does oxygen need to be desolved in water? Its not like membrane is not permitable to O2</p>
<p>kissthesky, they debated enough about the tree question, in the previous pages. The answer was phosphorous for the limiting nutrient.</p>
<p>Uh oh…that’s not good</p>
<p>I don’t know: It just does! Lol look through your biology book or online -_-;</p>
<p>yes its the answer every book has that but they dont explain, thats what i hate</p>
<p>Also in the previous pages, it was determined that 57 and 60 are from the same question, i think. Though I don’t remember anything about simple diffusion or whatever. Maybe it was a different question, but I don’t recall the question then, at all. (maybe it was on E).</p>
<p>Phosphorous? Arg. There goes my 800 <em>cries and hides in the wall</em></p>
<p>allright i give up, by the way when we get the score?</p>
<p>June 20th I think.</p>
<p>to we get that thick book?</p>
<p>We can cancel the score by next Wednesday</p>
<p>i wanted to steal it for practice</p>
<p>How sensitive are the machines when grading?
You can erase it but you know how it doesn’t erase 100%?
The machines will read my “dark” score, right? ARG. </p>
<p>(I shall send an email to collegeboard, asking about this issue!)</p>
<p>what if i bubbled some for E errased and then finished M?</p>
<p>SourApplezz, you must’ve done really well, huh? Expecting an 800? 
I missed 3, left 2 blank.
We shall see…June 20th. <em>sigh</em></p>