D4.3 Climate Change (IB Biology)

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Anthropogenic

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12 Terms

1

Anthropogenic

derived from human activities

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2

positive feedback loop

Causes a system to change further in the same direction.

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3

carbon cycle

The organic circulation of carbon from the atmosphere into organisms and back again

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4

ocean acidification

decreasing pH of ocean waters due to absorption of excess atmospheric CO2 from the burning of fossil fuels

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5

Melting sea ice

Will not affect sea level; melting of land ice will cause a rise in sea level.

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6

ice sheets and glaciers

second largest reservoir of water

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7

Afforestation

planting trees

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8

deforestation

Destruction of forests

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9

Phenology

the study of cyclic and seasonal natural phenomena, especially in relation to climate and plant and animal life.

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10

net carbon source

If more carbon leaves a store than enters it.

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11

coral bleaching

A phenomenon in which algae inside corals die, causing the corals to turn white.

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12

Ocean pH

Seawater is slightly alkaline
Surface water average pH 8.1
Ocean water pH decreases with depth

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