Which of the following best explains why ash trees are being cut down in certain regions?

• A. Because ash trees are naturally short-lived and die quickly
• B. Because ash trees produce toxic chemicals harmful to humans
• C. To increase the population of native bird species
• D. To control the spread of the invasive emerald ash borer beetle

Answer: (D)

Verified step by step guidance

1. Understand the context: The problem involves the cutting down of ash trees and asks for the reason behind this action. The options provided include various potential explanations, but the correct answer is related to controlling the spread of the emerald ash borer beetle.
2. Identify the emerald ash borer beetle: This is an invasive species that attacks and kills ash trees by burrowing into their bark and disrupting the tree's ability to transport water and nutrients.
3. Explain the ecological impact: The emerald ash borer beetle has caused widespread destruction of ash tree populations in affected regions, leading to significant ecological and economic consequences.
4. Clarify the management strategy: Cutting down ash trees in certain regions is a method used to control the spread of the beetle. By removing infested or at-risk trees, the beetle's habitat is reduced, slowing its spread to new areas.
5. Summarize the reasoning: The cutting down of ash trees is not due to their natural lifespan, toxicity, or to benefit bird populations, but rather as a direct response to the threat posed by the invasive emerald ash borer beetle.