Inflammation of certain membranes in the human respiratory system is known as A) Meningitis
B)anemia
C)gout
D)bronchitis

D) bronchitis

Explanation:

meningitis happens in the brain

anemia happens with red blood cells

gout happens in the joints of your body

bronchitis happens within the respiratory system

c

explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.