Scientists have looked at all known mass extinction events and tested for evidence of meteorite impact. What did theyfind?

Meteorite impact provides a general explanation for mass extinctions in the Earth'shistory.

Several but not all mass extinctions are associated with evidence of meteoriteimpacts.

No mass extinction is reliably associated with evidence of a meteoriteimpact.

Only the extinction that killed the dinosaurs is associated with evidence of a meteoriteimpact.