Which two factors are most important to the existence of plate tectonics on Earth?
A) mantle convection and a thin lithosphere
B) oxygen in the atmosphere and mantle convection
C) Earth's liquid outer core and solid inner core
D) the existence of life and oxygen in the atmosphere
Correct Answer:
Verified
Q18: The choices below describe four hypothetical planets.
Q19: Ridges in the middle of the ocean
Q20: There are no auroras on Venus because
Q21: How fast do tectonic plates move on
Q22: Why is Mars red?
A)Its surface is made
Q24: Which of the following best describes the
Q24: Which of the following describes tectonics?
A)the excavation
Q25: If the Earth were to warm up
Q26: What is a magnetosphere?
A)a region of space
Q27: Many scientists suspect that Venus has a
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