Biogeochemical Cycle Flashcards by Emile Jayne | Brainscape

Q

Biogenetic elements are

A

Elements that are essential to the biosphere.

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Q

The four cycles in the Earths system:

A

Biosphere,
Hydrosphere,
Geosphere,
Atmosphere.

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Q

Oxygen in atmosphere: (2)

A

Gaseous oxygen O2

Ozone O3

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Q

Oxygen in geosphere:

A

Part of the rocks, silicates/limestones.

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Q

Oxygen in hydrosphere: (3)

A

Water molecule.
Gas dissolved in water.
Part of dissolved compounds.

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Q

Oxygen in biosphere:

A

Component of living organisms.

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Q

The transfer of oxygen between cycles:

Biosphere ➡️ atmosphere

A

By photosynthesis.

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Q

The transfer of oxygen between cycles:

Atmosphere ➡️ geosphere

A

By oxidising rocks.

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Q

The transfer of oxygen between cycles:

Geosphere ➡️ hydrosphere

A

By dissolving rocks.

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Q

The transfer of oxygen between cycles:

Hydrosphere ➡️ atmosphere

A

Uptake by plants.

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Q

Major fluxes from ocean: (2)

A

Precipitation of hydrothermal minerals.

Production of biogenic pyrite.

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