Stratum basale epidermidis. Definition. noun. Latin term for basal cell layer of epidermis, the innermost layer composed of basal cells that lies at the base of the epidermis or above the dermis.Supplement. The cells of this layer are actively dividing to provide new cells to replenish lost skin from normal shedding.tratum basale epidermidis. Definition. noun. Latin term for basal cell layer of epidermis, the innermost layer composed of basal cells that lies at the base of the epidermis or above the dermis.
Lichens Contribute to Soil Formation. Lichens thrive in undisturbed sites where nothing else will grow. They grow on rocks, barren soil and the bark of dead or live trees. Lichens are not parasitic when they grow on trees, they just use the tree bark as a home. They enrich the soil by trapping water, dust and silt. When lichens die they contribute organic matter to the soil, improving the soil so that other plants can grow there. Lichens Fix Nitrogen
Worms play an important part in soil construction and recycling of organic waste. They are a part of a network of organisms that turn refuse into nutrient rich soil. These nutrients are one of the benefits of garden worms to plant growth. Worms in gardens also perform cultivation functions that increase soil porosity and allow oxygen to get into roots. Encourage earthworms in soil or even try worm composting to experience the life-giving effects of worm castings. Earthworm Benefits. Worms tunnel in soil and eat organic matter, which they excrete as castings. Worms abound in soils that are around 70 degrees Fahrenheit (21 C.). Any extremes of cold, heat or moisture are not good for worm activity. Worms in gardens are most active when soil is moderately warm and moist.