At the end of the twentieth century,________ has/have been added to environmental thinking.
A)global concerns
B)urban problems
C)water supply and pollution problems
D)human population growth
E)air pollution problems

Question

Quizplus · Accepted Answer

Global concerns have been added to environmental thinking at the end of the twentieth century, reflecting the increasing awareness of global environmental issues such as climate change and biodiversity loss.

At the End of the Twentieth Century,________ Has/have Been Added