Answer:
yes i have.
Explanation:
why are you asking that:)
<span>Difference between Active and Passive Immunity. Active immunity is produced by clonal selection and expansion. Passive immunity occurs when antibodies produced artificially are injected into a person to counteract antigens such as snake venom, rabies, tetanus toxin and Salmonella infection. hope this helps</span>
The alveoli is where the oxygen moves out of the lungs and into the blood. At the same time carbon dioxide moves out of the blood and into the lungs to be exhaled.
It is B. all the other require proteins
