This Graph Shows an Increase in the Number of Species

question 12

Multiple Choice

This graph shows an increase in the number of species of pesticide-resistant insects from 1900 to 2000.
-How did this increase in resistant species occur?

• A) Insects became more prevalent during the 1900s.
• B) Insects that were killed by pesticides did not have offspring, but those who were resistant did.
• C) Pesticide use promoted genetic changes that caused new species to arise.
• D) Insects needed to survive pesticides, so they gained new mutations for resistance.

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Definitions:

Construction Bids

Proposals submitted by contractors to undertake a construction project, typically including proposed costs and timelines.

Probability

An indicator of how probable an event is to happen, shown as a value ranging from 0 to 1, with 0 meaning it cannot happen and 1 meaning it will definitely happen.

Union

An organized association of workers formed to protect and further their rights and interests; a labor union.

Individual Probabilities

The likelihood of specific outcomes for individual events.