Planetary boundaries Flashcards

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1
Q

Define planetary boundary

A

limits between which global systems must operate to prevent abrupt and irreversible environmental change

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2
Q

List the nine planetary boundaries

A

1) atmospheric aerosols
2) climate change
3) ocean acidification
4) biogeochemical cycles
5) novel entities
6) freshwater use
7) ozone depletion
8) land system change
9) biodiversity integrity

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3
Q

what boundaries have been crossed

A

1) climate change
2) biodiversity integrity
3) biogeochemical flow
4) land system chnage

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4
Q

what boundaries have been avoided

A

1) ozone depletion
2) freshwater use
3) ocean acidification

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