The Fossil Record Shows That for Many Plant and Animal

question 54

Multiple Choice

The fossil record shows that for many plant and animal groups, the time between speciation events

• A) is usually about 50,000 years.
• B) varies greatly, but averages 6.5 million years.
• C) is usually greater than 40 million years.
• D) is equivalent to the length of 100 generations of a species.

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Definitions:

Nineteenth Century

The period from 1801 to 1900, marked by significant industrial, cultural, and political changes worldwide.

Pain Reliever

Medication used to alleviate pain, including over-the-counter drugs like acetaminophen and NSAIDs, as well as prescription opioids.

Delirium Tremens

A severe form of alcohol withdrawal featuring sudden and severe mental or nervous system changes.

Withdrawal Symptoms

Physical or psychological symptoms that occur after reducing or stopping the intake of a substance that has been used regularly.