Answer:
d
Explanation:
i went to massage therapy so take that as u will
Answer: 3rd stage/ Aids
In the 1st stage/ Acute HIV Infection, the virus attacks and destroys the infection-fighting CD4 cells of the immune system.
By the 3rd stage HIV has severely damaged the immune system.
The five levels of organization in a multicellular organism are cells, organs, tissues, organ systems and organisms. The caliber of intricacy and functionality increases going from cells to organisms.