soils Flashcards

1
Q

what do soils include

A

-agriculture
-building
-storing hsrmful greenhouse gas emissions

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2
Q

whata re the compostions of soil

A

-minerals
-water
-air
-organic matter
-plant litter

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3
Q

how was soil formned

A

-topography
-parent material
-organisms
-time
-human activity

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4
Q

what are the 3 hirizons of soil

A

-A horizon-topsoil
-B horizon-subsoil
-C horizon-bedrock

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5
Q

whata re the two impacts of soil formation

A

-leaching
-humification/breakdown of plant litter

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6
Q

what is leaching

A

leaching is when there is heavy rainfall and it washes away all the nutrients and minerals in thr top soil-creates hardpan

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7
Q

what is hardpan

A

when theres a thing crusty layer at the bottom of the topsoil

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8
Q

explain plant litter

A

dead leaves and twigs that land on the topsoil and i sbroken down by bugs and earthworms (oxygen is also needed) and turned into humus. this process is called humification

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9
Q

what are the different soil types

A

-brown soil
-podzol soil
-gley soil
-peaty soil

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