Questions
Multiple choice
For which of the following planetary boundaries has the threshold of acceptable risk been transgressed?
Options
A.a. Ocean acidification
B.b. Loss of biodiversity
C.c. Biogeochemical cycles
D.d. Ozone depletion
E.e. Air quality
F.f. Climate change
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Step-by-Step Analysis
Let's break down each option and assess whether the planetary boundary threshold has been transgressed.
Option a. Ocean acidification
- Ocean acidification is linked to elevated CO2 levels in the atmosphere dissolving into seawater. While this is a major concern and monitored as part of ocean health, the planetary boundary framework identifies ocean acidification as not yet transgressed in its quantified boundary. Some indicators show acidification is occurring, but the formal boundary status has not reached a transgressive threshold in the......Login to view full explanationLog in for full answers
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