Iridium is an element relatively
A)abundant on earth but rare in meteorites.
B)rare on earth but abundant in meteorites.
C)abundant both on earth and in meteorites.
D)rare both on earth and in meteorites.

Question

Quizplus · Accepted Answer

Iridium is a rare element on Earth but abundant in meteorites, particularly in the metallic cores of some of these bodies. This fact led to the hypothesis that a meteorite impact was responsible for the mass extinction event that occurred around 66 million years ago, as high concentrations of iridium were found in the geological layer that marks this time period.

Iridium Is an Element Relatively