Question

what decided the type and quality of soil ​

Answer 1

Type of soil is decided by average size of particles found in it. Quality of soil is decided by amount of humus and microscopic organism found in it.Humus is a major factor in deciding the soil structure because it causes the soil to become more porous and allows water and air to penetrate deep underground.

Answer 2

Soil quality is a measure of the capacity of a soil to perform necessary

functions. Soil functions include providing nutrients and water to

plants, filtering and cleaning water, regulating temperatures, recycling

and storing nutrients, and providing habitats for organisms. Given

these various functions, there is no single measurement for soil quality.

Instead a series of physical, chemical and biological properties are

measured in combination.