Practice Quiz

MCAS Biology Practice

Category - Biology

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There are at least 88 species of lemurs in existence today. Which of the following conditions most likely existed and made it possible for Madagascar’s original lemur ancestors to evolve into many species on the island?
  1. presence of a deadly virus that infected only lemurs
  2. complete isolation from other small mammal species
  3. new niches to adapt to in the absence of a large number of competitors
  4. climatic conditions that were very different from those on mainland Africa
Explanation
Answer: C - new niches to adapt to in the absence of a large number of competitors
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