Answer:
Innate immunity is a nonspecific defense mechanisms that play its role as soon as an antigen appear in the body (it is relatively rapid but nonspecific and because of that it is not always effective)
Explanation:
The barries of innate immunity are:
Skin: At Epidermal surface, its protective aspect are keratinized cells that lives on the surface, known as Langerhans cells.
Skin sweat or secretions: Their specific defense is sweat glands and sebaceous glands, and their protective aspect is low ph and washing action.
Mucosal surfaces: they are at the mucosal epithelium, and their protect aspects are nonkeratinized epithelial cells.
Oral cavity: They defend salivary glands through Lysozyme
Answer:
here is the answer
Explanation:
Scarlet king snakes cannot camouflage and so instead they mimic a dangerous neighbor. Scarlet king snakes have evolved over the years to look like coral snakes so that they could scare away other predators that may be dangerous and would want to hurt them
this is the reason
----- now the simplified answer
the scarlet snake has a very random ( rare ) genetic variation , it mimcs or
( behaves a like or looks like coral snake ) , it turns out that this trait helps the snake high chance of survival, snake with this kind of trait are often likely to reproduce and pass their traits to their children
now most of the scarlet snakes have this trait
trait ; a distinguishing quality or characteristic, typically one belonging to a person.
thank you
Answer:
<u><em>Ancestors</em></u>
Explanation:
Ancestors can be described as the persons from which a particular human being originated. In a broader perspective, it is referred to family history of a person. Scientists believe that all organisms on Earth originated from a common ancestor which were the prokaryotes. The prokaryotes with time gave rise to the eukaryotes. Common descent is the phenomenon in which organisms having common ancestors are referred.
Answer:
Fruits, vegetables, spices, cereals, Wood, Fibres, Cotton, perfumes, dyes, and most importantly medicines.
Explanation:
Plants play a major role in the preparation of several useful drugs and antibiotics.
