DDT Was Once Considered a "Silver Bullet" That Would Permanently

question 9

Multiple Choice

DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?

• A) All habitats should have received applications of DDT at about the same time.
• B) The frequency of DDT application should have been higher.
• C) None of the insect pests would have genetic variations that resulted in DDT resistance.
• D) DDT application should have been continual.

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Definitions:

Expanding

The process of growing in size, scope, or scale, such as a business increasing its operations or market reach.

Ethical Decisions

Decisions made based on moral principles, considering what is right, fair, and just.

Clear-cut

Direct and unmistakable in presentation or articulation.

Practice

The actual application or use of an idea, belief, or method, as opposed to theories about such application or use.