Author Question: What is the asthenosphere? A) A portion of the atmosphere that blocks UV radiation B) A soft, ... (Read 32 times)

itsmyluck · **on:** Jul 16, 2018

What is 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

Question 2

Over the past 50 years in the United States, commuting

A) time and distance have nearly doubled.
B) time has remained about the same, but the distance has doubled.
C) time and distance have increased sixfold.
D) time and distance have remained about the same.