题目
题目

ENVIR 100 (Sp25) Exam 3

单项选择题

The term planetary boundaries was explained in Rockstrom et al (2009) as...

选项
A.Another phrase for the outermost layer of the earth's crust
B.A place beyond the earth's troposphere where planes cannot pass
C.An attempt to define a "safe operating space" for humanity that identifies critical boundaries to global-scale processes beyond which humanity should not go
D.Political boundaries drawn by the countries that carve up our planet
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思路分析
The question asks about the term planetary boundaries as explained in Rockström et al. (2009). Option 1: 'Another phrase for the outermost layer of the earth's crust' — This is incorrect. Planetary boundaries refer to global-scale limits on Earth system processes, not geological delineations of the cru......Login to view full explanation

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