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Question

Difficulty: MediumIdentifying Implied Meanings

Passage:
Prescribed burn crews intentionally ignite low-intensity surface fires only when ambient relative humidity is between 30 and 55 percent and underbrush fuel moisture remains moderately damp. If the duff layer on the forest floor is completely desiccated, the fire penetrates deep into the root systems and risks ascending into the upper canopy via ladder fuels. Conversely, if humidity exceeds 60 percent, the fire fails to consume dead twigs and accumulated pine litter, leaving the hazardous fuel load intact for the upcoming dry season.

Statement:
Based on the passage, it can be inferred that conducting a controlled burn during severe drought conditions increases the risk of destroying mature trees rather than safely reducing surface fuels.

Answer: Answer

Answer

True
The statement is true because the text indicates that totally dry duff allows flames to penetrate root systems and travel up ladder fuels into the canopy, implying that dry conditions transform a safe surface burn into a destructive event for mature trees.

Step-by-Step Solution

1
Analyze the stated effects of burning during completely desiccated conditions.
The passage notes that completely dry duff causes flames to burn into root systems and climb ladder fuels into the upper canopy.
To identify how excessive dryness alters the behavior of a prescribed burn.
2
Compare the primary purpose of a prescribed burn with the outcome under dry conditions.
Prescribed burns are designed to safely consume surface litter; ascending into the canopy and roots threatens living, mature trees.
To deduce the unstated implication of burning in severe drought.
3
Evaluate the accuracy of the statement based on the logical deduction.
The inference is valid and supported by the passage evidence.
To confirm the true/false determination.

Key Concept

Identifying Implied Meanings from Passage Evidence
Estimated Time:1m 0s
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Topics

Identifying Implied Meanings

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