He is consider as a worker in the class room that follows somethings the teacher says sorry if is wrong.
Anemia is a breakdown in this sophisticated transportation system, resulting in your body not getting enough oxygen. Internal medicine physician Gary Conley, MD, explains that it occurs for one of three reasons: Your body doesn't produce enough red blood cells.
(BRAINLIEST PLEASE)
True the heart like any muscle strengthens when you use it
HIV crossed from chimps to humans in the 1920's in what is now the Democratic Republic of Congo. This was probably as a result of chimps carrying the Simian Immunodeficiency Virus (SIV), a virus closely related to HIV, being hunted and eaten by people living in the area.