What process is responsible for creating roughly half of the elements heavier than iron, including iodine necessary for human metabolism?

Answer

The collision of neutron stars (r-process)

The collision of neutron stars facilitates a rapid neutron capture process, known as the r-process, which is the primary mechanism for creating approximately half of the elements heavier than iron, such as iodine.

What process is responsible for creating roughly half of the elements heavier than iron, including iodine necessary for human metabolism?
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