If a collapsing cloud core lacks sufficient trace metals, what negative effect can occur?

Answer

The internal pressure rises too quickly because heat is not shed efficiently, halting collapse.

Without metals to facilitate rapid radiative cooling, the heat generated by gravitational contraction builds up, raising the internal pressure too high and stopping the contraction process before the necessary conditions for hydrogen fusion can be met.

If a collapsing cloud core lacks sufficient trace metals, what negative effect can occur?

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