Which zone is the deepest seabed zone?
a. Bathyal zone
b. Hadal zone
c. Littoral zone
d. Abyssal zone
ANS: B
The ocean is categorized in various zones. There are zones that indicate depth. The hadal zone is the
deepest of seabed zones. Information can be found in the section The Marine Environment is
Classified in Distinctive Zones.
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The proper sequence of events in building a protein from a gene is
A. translation, transcription, replication. B. replication, transcription, translation. C. transcription, translation. D. translation, transcription.
The study of paleomagnetism is possible because ____
a. the magnetic minerals in rocks create Earth’s magnetic field b. most rocks contain no magnetic minerals c. the magnetic minerals in rocks disrupt Earth’s magnetic field d. the magnetic minerals align toward the north magnetic pole at the Curie point e. Earth’s magnetic poles reverse on a regular and predictable time scale
What causes a decrease in oxygen levels beyond the sunlit layer?
a. There are fewer animals present b. Mineral precipitation c. The respiration of marine animals and bacteria d. Decreased saturation because of cooler water e. The by-products of photosynthesis
The mechanical weathering process that occurs because of pressure release is:
a. creep b. frost wedging c. hydrolysis d. sheeting