What is the definition of the asthenosphere?
A. A portion of the atmosphere that blocks UV radiation
B. A soft, low-velocity layer in the Upper Mantle
C. The transition zone between the Mantle and the Outer Core
D. The portion of the Hydrologic Cycle that describes how plants contribute their respiration
Answer:B
What is the definition of the asthenosphere?
A. A portion of the atmosphere that blocks UV radiation B. A soft, low-velocity layer in the Upper Mantle C. The transition zone between the Mantle and the Outer Core D. The portion of the Hydrologic Cycle that describes how plants contribute their respiration