Layers of soil are also called ____.

Soils form in layers and all the layers make up the __________ _________.

Nutrient rich, containing a mixture of humus, clay, and minerals, is most suitable for plant growth.

Decayed organic matter in soil is called ___.

What depends on the size of individual soil particles and is determined by the relative proportions of particle sizes that make up the soil.

Soil particles that are larger than 2mm

How freely that water flows between the pores in soil is known as ____.

Regardless of the nutrients present in the soil, if the _____ is not suitable those nutrients will be inaccessible to the organisms.

What is a type of fertilizer that alters pH and makes the soil nutrients more accessible

What is the best pH for plan growth?

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