Multiple Births Have _________ in the Last 30 Years Due

question 299

Multiple Choice

Multiple births have _________ in the last 30 years due to fertility drugs and the rising average age of mothers giving birth.

• A)decreased
• B)remained the same
• C)increased
• D)varied up and down

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Definitions:

Base Level

The lowest point to which a river or stream can erode its channel, often sea level for rivers.

Uplift

The vertical elevation of the Earth's surface due to natural causes such as tectonic movements or volcanic activity.

Terraces

Flat, step-like surfaces on a sloped piece of land, created either by natural processes like river erosion and glacial activity or by human agricultural practices.

Active Channel

The portion of a river or stream that is currently used for the flow of water, often subject to frequent changes in course and volume.