Reading Comprehension

PT153 · S4 · P1 · Q3 Forest Preservation

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Forests are among the world’s most valuable resources, both in a narrowly economic sense and in a broader, ecological sense.

Topic

Forests’ value, common misconceptions about their ecological functions, and analysis of claims about preservation versus economic use.

Framework

Present Debate (the passage examines various claims about forests and weighs arguments on both sides)

Main Point

In order to make wise policy decisions about preserving forests, we need a grounded understanding of both economic and ecological claims, and not all common arguments (like the oxygen myth) hold up, though biodiversity preservation remains a strong case for conservation. The Most Valuable Sentence: (End of P1)

P1: Forests’ Value and the Need for Clear Debate

Forests are crucial for both the economy and ecology, providing products and environmental benefits, but rational policy requires strong understanding of both sides of the conservation argument, especially regarding common claims about oxygen and biodiversity.

P2: The Oxygen Myth

Despite the common belief that forests are essential for oxygen production, this is a myth—forests on the whole do not create a net increase in oxygen because the decomposition cycle balances things out.

P3: Biodiversity and Its Importance

Preserving forests may be important for guarding undiscovered plants that could aid medicine, and many see protecting biodiversity as a moral or intrinsic good, regardless of economic utility.

3.

The information in the passage answers which one of the following questions?

  1. What percentage of the world’s

    Out of Scope: percentage

    If we scan/search for "Brazilian", that specific region is only discussed in the first sentence of the 2nd paragraph, and it doesn't indicate what % of the world's tropical rain forest resides there.

    0% picked this

  2. How many products are derived

    Out of Scope: total quantity

    Can you imagine answering this question in real life? It would be impossible, right? You'd have to know every single plant grown on every single commercial plantation throughout the world, and then you'd have to know every product that is made out of any of these plants. Since no one in the real world could ever answer this question, clearly the passage wouldn't have. (If it said "approximately", that's a more feasible question to ask). Commercial plantations are mentioned in the final paragraph, but there is no number offered for "total # of products derived from commercial plantation plants".

    8% picked this

  3. Correct

    By means of what process

    Why this is right

    If we scan/search for "oxygen", we'll find it mentioned several times, once at the end of the 1st paragraph and four times throughout the 2nd paragraph. One of those references in the 2nd paragraph says "trees do produce oxygen by photosynthesis". So, choice (C), plants produce oxygen by the process of photosynthesis. Some of us might be thinking: - they said trees, this says plants - how do we know a tree is a plant? (common sense) - how do we know that just because trees produce oxygen by photosynthesis, that other plants produce it the same way? That 2nd question does seem like it stretches the available text, but again it's a very common sense thought, because we know that central to your identity as a plant is photosynthesis. Moreover, if some plants (such as trees) use process X to make oxygen while other plants use process Y, then it would be illogical to phrase a question as "By means of what process (singular) do (all) plants produce oxygen?" If they have differing means, then we wouldn't ask it that way.

    Skill tested: Five Questions · how this choice captures the passage's function is the move to repeat next time.

    86% picked this

  4. What measures, if any, could

    Out of Scope: produce more oxygen

    As we discussed with (C), the concept of 'oxygen' shows up at the end of the 1st and throughout the 2nd paragraph. All we learn from that area is that the overall life cycle of a tree is pretty oxygen neutral. So whether we had more trees / fewer trees, it wouldn't produce more oxygen. And that's all we hear about oxygen. So we have no idea what ways, if any, exist that could help forests produce more oxygen than they currently do.

    2% picked this

  5. Do trees in tropical rain

    Out of Scope

    Out of Scope: absorb more Relative vs. Absolute We only ever talk about trees (including those in tropical rain forests) absorbing carbon dioxide, using yes/no absolute language. We have no way to make any comparative claims about whether certain types of trees absorb more / less CO2 than do other types of vegetation. Absorption appears only once, in the first sentence of the 2nd paragraph.

    4% picked this

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