A Researcher Notices That the Migration Patterns of Butterflies Have

question 9

Multiple Choice

A researcher notices that the migration patterns of butterflies have changed over the last several decades, with butterflies migrating earlier in the season and over shorter distances. What are possible explanations for this observation?

• A)Through agricultural practices, humans have altered the geographic range of the butterflies' food sources (i.e., certain flowers).
• B)Through agricultural practices, humans have altered the geographic range of the butterflies' predators (i.e., birds).
• C)Humans have increased Earth's temperature by releasing CO₂ into the atmosphere, altering the flowering times of the butterflies' food sources.
• D)Through agricultural practices, humans have introduced additional food sources for the butterflies.
• E)All of these choices are correct.

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