Which type of stellar remnant is responsible for creating and scattering elements *heavier* than iron into the interstellar medium?

Answer

Supernova Remnants (SNRs)

The explosion of massive stars forming Supernova Remnants is described as the universe's factory for creating elements heavier than iron, which are then scattered back into gas clouds.

Which type of stellar remnant is responsible for creating and scattering elements *heavier* than iron into the interstellar medium?
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