<p>ecology - anyone remember the questions about the terrarium? oxygen levels?</p>
<p>Wait, so what has the better curve: M or E? I think I know both equally well but ended up choosing M.</p>
<p>Barron’s book clearly states that rain forests “account for more than 20 percent of Earth’s net carbon fixation (food production).”</p>
<p>So it is rain forests. NOT grasslands.</p>
<p>acdc6390, i totally understand your reasoning but i’m like %99.999 sure of rainforest, but you know what, you could end up being right. i guess we’ll never know</p>
<p>ichiruki - i have the same question, so if anyone remembers the terrarium for E??</p>
<p>i think i put the oxygen levels decreased after contemplating it for 5 minutes, and i put 3 trophic levels. i put the one with the plant growth would be inhibited for question 100</p>
<p>yes maatthheew!!! i think you have it. i think when the testers meant “food production,” they meant like the end products of photosynthesis - basically the greatest energy producers, in the form of glucose i guess. and that would be rainforest for obvious reasons.</p>
<p>you know we should all complain to college board that the marine biome produces the most food</p>
<p>sohaibshaikh, they might have said which terrestrial biome, not sure though</p>
<p>Actually, they said something along the lines of “human food production,” insinuating that it is not contingent on the biome with the greatest biomass, but with the biome that produces the most food (I think that might also refer to plants, animals, and/or fungi).</p>
<p>What remains to be seen is whether it’s rainforest or grasslands, seeing as a single review book, Barron’s, says its rainforest.</p>
<p>Coming from someone who put rainforests, I’m thinking it’s grasslands…</p>
<p>Yeah barrons says that rainforests account for 20% of “carbon fixation”…but is that really for humans? couldn’t they only be referring to the plants making food for themselves? i dont know… the wheat and grain fields that grow in grasslands are definitely a main staple of human food. I’m feelin like its grasslands…I mean its hard to name any specific BIG thing that humans get from rainforests…it seems like all we do is cut them down all the time lol</p>
<p>^^ Do you understand what “food production” means? Barron’s clearly states that rain forest is the answer, not grassland.</p>
<p>Additionally, I don’t think Barron’s takes into account all the livestock and such, which all count toward “food production.”
The soil of the rainforest was especially acidic if I remember correctly, while the grassland soil is always described as “fertile” and being converted to farmland.</p>
<p>In PR, Kaplan, REA, etc., none of of them mention that rainforest produces the most food. If it was such a substantiated fact, then one of those ought to have mentioned it?</p>
<p>sd6 I think the key was “human food production”. I interpreted that to mean “where humans produce the most food” which is clearly grasslands. Of course you could be right as well. I just think that if CB was thinking along those lines they would have included the marine biome as I’m pretty sure the question wasn’t limited to terrestrial biomes (because I remember immediately thinking that it was the marine biome).</p>
<p>As for the terrarium I think the oxygen levels fluctuate (high during day, lower during night). The three levels were clover and grass, two animals, and the lizard. I forget the exact animals.</p>
<p>Grasslands - are “breadbaskets” of the world
Also, Huntungton’s is %50- it’s dominant and dad can give only 1 of his autosomal genes. Mom doesn’t ahve the disease</p>
<p>Does that mean photoperiodism was the answer for both questions concerning birds and plants and the season/length of night etc?</p>
<p>^Yup .</p>
<p>Does anybody know if 2 wrong would lower your score 10 points or does 1 wrong lower your score by 10 points?</p>
<p>It depends on where the score range is. Sometime a raw score of x and x+1 are the same scaled score. Okay, so phototaxis WASN’T one of the answers now? Is this final??</p>
<p>I guess we’re still discussing the food production one though…</p>
<p>it depedns how many do you think you got wrong</p>
<p>
Uh, basically I agree with this. So phototaxis is an answer.</p>
<p>Sorry if I’m getting things mixed up.</p>
<p>Food production is definitely grasslands. Personally, i believe that rainforest was there to trick those who simply went b which biome has the most diversity. Just because it has great diversity does not mean it provides the most food to humans . Although to other organisms it might be very productive. Humans are advantages much more by grasslands. The popular expression luvbio brought up of grasslands being the “breadbaskets” of the world is very applicable as well.</p>
<p>wait, was the question about the biomes has “human food production” or was it just “food production” ?? I don’t remember the human part.</p>