用relative abundance造句子，“relative abundance”造句

Metallicity is a measure of the relative aBundance in a star of elements other than hydrogen and helium.

Based on the analysis of their relative abundance,9 species were importantweeds in the area.

But the research by Crowder, an insect ecologist at Washington State University in Pullman, and his colleagues, shows the importance of 'evenness' - the relative abundance of different species.

With massive glacier-scooped lakes fringing its perimeter and with goats, sheep and grizzly bears in relative abundance, glacier is a photographer's paradise.