Answer:
c. tinnitus
Explanation:
Tinnitus (a hearing impairment) is a form of hearing of sound when no external sound is present Which is often described as a Ringing,Tinnitus may also sound like a clicking or roaring. i.e usually unclear voices or music are heard. The sound may be soft or loud, low or high pitched, and appear to be coming from one or both ears. Ranging from one person to another, the sound may causes depression or anxiety and can interfere with concentration.
Otitis externa is a condition that causes inflammation , the inflammation also covers (redness and swelling) of the external ear canal, i.e the tube between the outer ear and eardrum.
Meniere's disease popularly called (MD), is a disorder of the inner ear that is characterized by episodes of feeling like the world is spinning (vertigo), hearing loss, and a fullness in the ear. The cause of MD involves both genetic and environmental factors. Some of the factors include constrictions in blood vessels, viral infections, and autoimmune reactions.
Otosclerosis is a condition where one or more foci of irregularly laid spongy bone replace part of normally dense enchondral layer of bony otic capsule in the bony labyrinth. This condition affects one of the ossicles (the stapes) resulting in hearing loss, vertigo or a combination of symptoms.
Therefore from the foregoing we can conclude that Tinnitus is the correct anwser.
Answer:
The given statement is True.
A human body is composed of around 60 percent of water, the average range is around 50-65 percent.
Water is a vital nutrient for any living organism including human beings.
Being a universal solvent, it primarily helps in metabolism and transportation of proteins and carbohydrates in our body.
It helps in maintaining the internal body temperature through respiration and sweating.
It helps in excretion of waste material through urination.
It lubricates joints and acts as shock absorbent for the fetus, spinal cord, and brain.
The macromolecule would probably be the carbohydrate.
