题目

20.单选题（2分）______is extremely important for main taining the productivity of an ecosystem a nd its conservation is the responsibility of the global community. ( )A. BiodiversityB. BiographyC. BiomassD. Biology

20.单选题（2分）______is extremely important for main taining the productivity of an ecosystem a nd its conservation is the responsibility of the global community. ( )

A. Biodiversity

B. Biography

C. Biomass

D. Biology

题目解答

答案

A. Biodiversity