Soils
Are soils renewable or nonrenewable
nonrenewable
What particle size has the highest permeability?
sand
This is the most important horizon for plant growth and is also known as topsoil.
A
What is the optimal pH for most soils to grow crops?
6 to 7.5
In CLORPT
P stands for
Parent material
How long does it take soils to form?
100s to 1000s of years
The higher the soil permeability the ____________ the capacity to retain water.
lower or less
Weathered and unweathered rock is found in this horizon
C
What type of nutrients are needed in large amounts?
macronutrients
IN CLORPT
R stands for
Relief
Is soil living or nonliving
living
Soil consists of three particles which are
sand silt and clay
What 3 horizons are typically found in most soils?
A B C
The ability of a soil to hold nutrients like magnesium and calcium is called?
CEC
Thermal expansion is a type of ___________ weathering
Physical
List 5 things found in soil
minerals, gases, water, dead plants and animals, living organisms, weathered rock
What property depends on the amount of space that are open in the soil?
Porosity
This horizon contains bed rock
Decomposed plants and animals are known as the soil ____________ matter.
organic
Animals burrowing through rock are a type of chemical weathering?
no or false
Best conditions to form soils
warm and wet
Is soil color a physical property of soil?
yes
These 2 horizons are found more often in forest.
O and E
What macronutrient helps to build ATP and cell membranes in plants?
P
What horizon contains leaf litter, organisms, and decomposing plant and animals?
O