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
Soil contains considerable amounts of available energy in mineral and organic form, and harbours a varied population of living organisms. These inhabitants include large organisms such as earthworms, insects and vast numbers of smaller organisms like protozoa, bacteria, small fungi, nematodes and algae.he main role of mould and fungi is to breakdown the hard materials in plant remains. Often it is only due to their activity that bacteria can feed on these materials. Bacteria. The activities of decomposing bacteria are responsible for the circulation of carbon, which is necessary for life on earth.