This virus attacks the white blood cells of the human body. eventually, the immune system cannot handle the viral invasion. this makes the body prone to attack from other viruses and bacteria. what is the name of this infectious viral disease? a) aids b) cancer c) diabetes d) parkinson's disease

Explanation:

AIDS stands for Acquired Immune Deficiency Syndrome, like its name says, this syndrome alters the immune system in such a hard way that even a simple flu can kill you, because you don't haven any defences to fight against.

This syndrome is so heavy and complicated, imagine that AIDS can mutate according with DNAs, this means that the virus information is different in each individual.

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.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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