One of the
characteristics of the planet mars that makes
it very different from earth is that it does not
have a large magnetic field. based on what you
know about earth's magnetic field, what do you
think is different about mars' interior?

The interior of Mars is probably solid.

Explanation:

The Earth's magnetic dynamo is generated by a current in the interior of the planet that is a result of the eddies that form thanks to the outer core being molten.

Since Mars is a smaller planet and is located twice as far from the Sun as Earth, it cooled faster and likely no longer has a molten or semi-molten interior. The cooling of the interior of the planet would have shut off the magnetic process and could explain why the modern Martian atmosphere is so tenuous.

a characteristic is a deep cut in the earth or left over rock aka till.