move in a circle on a central axis.
American paleontology research physical evidence to support the theory of evolution
Answer:
Immunodeficiency disorders prevent your body from fighting infections and diseases. This type of disorder makes it easier for you to catch viruses and bacterial infections. Immunodeficiency disorders are either congenital or acquired. A congenital, or primary, disorder is one you were born with. whereas Opportunistic infections (OIs) are infections that occur more frequently and are more severe in people with weakened immune systems, including people with HIV. Many OIs are considered AIDS-defining conditions.
hope it helps please mark me br-
well you know what i mean : )
Explanation:
Bulk flow systems move substances faster than simple diffusion.