What does the extremely large size of volcanoes on Mars indicate?
A)Mars has a much thicker crust than the Earth.
B)Water once flowed in streams on Mars.
C)Mars has never had a molten interior.
D)Erosion does not occur on Mars.

Question

Quizplus · Accepted Answer

The extremely large size of volcanoes on Mars indicates that the planet has a much thicker crust than the Earth. This is because the volcanoes on Mars were able to grow much larger before the crust could fracture and collapse, allowing their massive size to be maintained.

What Does the Extremely Large Size of Volcanoes on Mars