Answer to Question 1ANS: A
The USS Stewart was the first vessel to make a continuous profile of the ocean. They had an updated
version of the Iceberg Detector and Echo Depth Sounder, a device invented after the sinking of the
Titanic. Information can be found in the section Ocean Floor Is Mapped by Bathymetry.
Answer to Question 2ANS: C
There is a prevalence of active margins in the Pacific. These are areas associated with converging
plates and are characterized by high earthquake and volcanic activity. Recall the Pacific Ring of Fire
mentioned in Chapter 3. Information can be found in the section Continental Margins May Be Active
or Passive
The process of placing a stent in a blood vessel. (A) A catheter is used to place a collapsed stent
Oxisol Profile
Dred Scott and his wife and children are featured on the cover of Frank Leslie’s Illustrated Newspap
A healthy diet is made up of well-balanced nutrients.
A stylized bathymetric profile of the ocean
An example of continuous variation: biology students organized according to height.