As Discussed in the Text, Long-Term Continental Drift Had Significant

question 17

Multiple Choice

As discussed in the text, long-term continental drift had significant evolutionary ramifications because

• A) groups of animals were no longer isolated from each other by oceans.
• B) the distribution of mammals and other land vertebrates were unaffected.
• C) geological activities induced volcanic activities which decimated populations of placental mammals.
• D) groups of animals were isolated from each other by oceans.
• E) scientists can map the changes that occurred.

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Definitions:

Erector Spinae

A group of muscles and tendons running along the spine, which extends the back and helps in maintaining an erect posture.

Vertebral Column

The spine or backbone, consisting of a series of vertebrae that enclose and protect the spinal cord.

Interspinales

Muscles located between the spinous processes of the vertebrae, contributing to spinal stability and movement.

Multifidus

The multifidus is a deep muscle of the back that stabilizes the vertebrae during movement and helps maintain proper posture.