“relative abundance”简单造句，relative abundance造句子

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.

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.