What evidence supports the idea that a supernova remnant was involved in Earth's formation?

The Earth supports life.

The Earth orbits a star.

There is no evidence to support this claim.

The Earth has an iron core.

There is no evidence to support this claim.

The cause behind, we cannot observe that what would have left from the "parent supernova" of our scheme, is the four to five billion years or may be a pretty vital time within the universe. And there's no means to verify what how our Galaxy looked like that long ago, and there's no means we could verify what vital events have happened around the galaxy between now and then.