Answer:
Because having 3 eyes or 6 does isnt harmful but having 3 arms or legs you could get seriously hurt or lose the limb and bleed out.
Explanation:
In HIV-infected patients, there is a gradual loss of CD4+ T cells over time. These cells, also called T helper cells, organize the immune system's attack on disease-causing invaders, like Salmonella.
Answer:
Troposphere.
Explanation:
Humans live most of their lives in the troposphere atmosphere.
