Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
Q37: What is a scientific theory? Explain how
Q38: Because the early Earth was a large
Q39: Which layer of the Earth is the
Q40: _ describes Earth's origins and its development
Q41: What is the accepted age of the
Q43: A research team is studying the velocity
Q44: Science uses observations of phenomena in order
Q45: Which physical feature represents the true transition
Q46: Are humans part of the Earth system?
Q47: A hypothesis can never be changed or