Both the complexity of the phenomenon known as extinction and the vastness of the biosphere, having prompted many scientists to call for a large increase in the number of biologists working both in the field and in laboratories to clarify the relationships among the planet's many endangered life-forms.
-
Aand the vastness of the biosphere, having prompted many scientists to call for a large increase in the number of biologists working both
分析该选项
-
Band the vastness of the biosphere has prompted many scientists calling for a large increase in the number of biologists both working
分析该选项
-
Cand the vastness of the biosphere have prompted many scientists to call for a large increase in the number of biologists working both
分析该选项
-
Das well as the vastness of the biosphere have prompted many scientists to call for a large increase in the number of biologists who both work
分析该选项
-
Eas well as the vastness of the biosphere has prompted many scientists to call for a large increase in the number of biologists who work both
分析该选项