Ami may have recently contracted HIV and had the first test done too early.
There is a window
period between person's exposure to HIV and when a test can definitely tell
positive HIV infection. The window period varies from person to person and is
also different depending on type of HIV test.
Answer:
E. Vasoconstriction.
Explanation:
Vasoconstriction is narrowing or constriction of the blood vessels. It happens when smooth muscles in blood vessel walls tighten. This makes the blood vessel opening smaller. Vasoconstriction may also be called vasospasm.
Vasoconstriction is a normal process. It helps keep your body in healthy balance.
Vasoconstriction may occur to:
stabilize blood pressure or raise blood pressure
reduce loss of body heat in cold temperatures
control how blood is distributed throughout your body
send more nutrients and oxygen to organs that need them
protect your body against blood and fluid loss
Answer:
no this is operant conditioning
Explanation:
operant conditioning is a learning style which was first studied by Skinner and it is based on positive or negative reinforcement to induce learning. In this example we can see operant conditioning with negative reinforcement. Herbie learned after a punishment he got to his action
