The lowermost level of the epidermis is known as stratum germinativum. It is the bottom of the epidermis and cells divide constantly and push older cells upward. It is mainly complete up of basal keratinocyte stem cells which can be well thought-out the stem cells of the epidermis. They distribute to practice the keratinocytes of the stratum spinosum which transfer rapidly. Other types of cells originate within the stratum basale are melanocytes which is pigment making cells, langerhans cell which is immune cells and merkel cells such as touch receptors.
The process of natural selection is described in the cartoon.
Explanation:
Natural selection is the mechanism by which an organism survive and evolve.
It is the process in which organism have better adaptation to its environment and live to reproduce organisms with useful traits which are passed on to their offsprings.
In the given cartoon it is observed that green beatles fall prey to the crows as a result their survival chances are minimal. Over the generations they are eaten by crows and eventually their brown counterparts are in majority. This is because the brown colour beatles are safe from the prey, they pass on this trait to their offspring and remains safe and more in population.
The brown colouration in beatles is the Darwinian trait of survival of the fittest for beatles.
The variation in population, mutation or genetic drift causes natural selection.
The one with better adaptation survives and reproduce more viable offspring in the population.
Answer:
pseudostratified
Explanation:
The epithelium of the nasal cavity, nasopharynx, trachea and bronchi is ciliated pseudostrtisfied columnar epithelium, often with goblet cells
B. Frost wedging.
This occurs in places where temperatures frequently rise and fall below freezing, as water expands and cracks the rocks when it freezes.
