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Exam 3 - Pt. 3
Soil
7
Science
Undergraduate 1
04/07/2014

Additional Science Flashcards

 


 

Cards

Term
Soil formation - # of years to form
Definition
worldwide - 15 years per centimeter
Term
Horizons
Definition

A) topsoil, rich nutrients, vulnerable erosion

B) subsoil, some rock

C) lots of rock

Term
Soil formation
Definition

Parent material (ancient layer rock)- thick A horizon

Forest - thick/thin A horizon

Dessert - thin A horizon

Term
Parent material
Definition
source of soil is formed (bedrock)
Term
Erosion
Definition
wearing away and transportation of soil by wind, water, or ice
Term
Erosion problems
Definition
deforestation and desertification; ag practices
Term
% of ag land usable US & World
Definition

US - 50% land

WORLD - 35% land

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