Critical reading – forest fires and old-growth stands The passage explains crown fires leap across treetops in thickets, but in old-growth forests, shade suppresses saplings and lower branches are too high to ignite. What statement is best supported?

Difficulty: Easy

Correct Answer: forest fire damage is reduced in old-growth forests.

Explanation:

Introduction / Context:The paragraph contrasts conditions that enable crown fires (dense young growth) with structural features of old-growth stands (high canopies, shade that suppresses understory) that impede treetop spread.

Given Data / Assumptions:

  • Crown fires are devastating when they jump treetop to treetop.
  • Old-growth shade prevents thickets of small trees.
  • Lower branches in mature trees are too high to catch flames easily.

Concept / Approach:Select the option that directly reflects the described fire behavior in old growth: reduced potential for crown fire spread implies reduced damage relative to younger stands.

Step-by-Step Solution:Link cause and effect: fewer ladder fuels and higher branches → harder for fire to crown.Conclude: damage is reduced in old-growth conditions.Reject options that prescribe actions (cutting or thinning) or contradict the described protection.

Verification / Alternative check:If crown fires are the most devastating and old growth resists crowning, it follows that damage is mitigated in old growth.

Why Other Options Are Wrong:

  • B/C: Prescriptions not stated.
  • D: Opposite of the point.
  • E: Debris accumulation is not asserted.

Common Pitfalls:Confusing management recommendations with textual support; the passage is descriptive, not prescriptive.

Final Answer:forest fire damage is reduced in old-growth forests.

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