Suppose you cut your finger only slightly in what is known as a "paper cut." you observe that the cut hurts but it doesn't bleed. how would you interpret your observation?
a. nerve endings occur in epithelium but blood vessels do not.
b. the paper severed the skin, missing blood vessels, but hitting nerve endings.
c. very thin cuts never draw blood but do sever nerves.
d. you probably have some unknown condition related to blood clotting.
e. the paper had some factor that prevented the release of blood but not the sensation of pain.

Nerve endings occur in epithelium but blood vessels do not.

Explanation:

Epithelial layer:

Among four tissue types of the body epithelial layer is one of them. epithelial layer is present around surface of all organs including skin, reproductive, respiratory and digestive tracts. Epithelial cells lack vessels, it means that they do not contain any blood vessels, These cells receive nourishment through the process of diffusion of substances from the underlying connective tissue,

Nerve endings are present inside Epithelial tissue, so that they feel pain when ever something cuts these layer.

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.