Artificially acquired passive type of immunity results from the transfer of antigens from one individual to another individual by artificial means.
Passive immunity occurs when you are protected from pathogens by the immunity of others.
Artificially acquired passive immunization is short-term immunization by antibody transfer and can be administered in a variety of ways. As human or animal plasma or serum, as pooled human immunoglobulin for intravenous (IVIG) or intramuscular (IG) use, as immunized high titer human IVIG or IG.
Artificially acquired active immunity is protection created by intentionally exposing a person to antigens in a vaccine to induce an active and sustained immune response.
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Many Romans became lazy and luxury loving.
Do you need the answer from the quadratic formula? if so:
![\frac{b+/- \sqrt{-b^2-4(a)(c)} }{2(a)}](https://tex.z-dn.net/?f=%5Cfrac%7Bb%2B%2F-%20%5Csqrt%7B-b%5E2-4%28a%29%28c%29%7D%20%7D%7B2%28a%29%7D%20)
x^2=a
-3x=b
-18=c
![\frac{3+/- \sqrt{3^2-4(1)(-18)} }{2(1)}](https://tex.z-dn.net/?f=%5Cfrac%7B3%2B%2F-%20%5Csqrt%7B3%5E2-4%281%29%28-18%29%7D%20%7D%7B2%281%29%7D)
![\frac{3+/- \sqrt{9+72} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B3%2B%2F-%20%5Csqrt%7B9%2B72%7D%20%7D%7B2%7D)
![\frac{3+/- \sqrt{81} }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B3%2B%2F-%20%5Csqrt%7B81%7D%20%7D%7B2%7D)
![\frac{3+/- 9 }{2}](https://tex.z-dn.net/?f=%5Cfrac%7B3%2B%2F-%209%20%7D%7B2%7D)
![\frac{3+9}{2}= \frac{12}{2} =6](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%2B9%7D%7B2%7D%3D%20%20%5Cfrac%7B12%7D%7B2%7D%20%3D6)
![\frac{3-9}{2} = \frac{-6}{2} =-3](https://tex.z-dn.net/?f=%20%5Cfrac%7B3-9%7D%7B2%7D%20%3D%20%5Cfrac%7B-6%7D%7B2%7D%20%3D-3)
Your answer would then be 6 and -3
Answer:
Materials used to build the central pacific railroad were shipped around South America
Explanation:
Before the continental railroads, the travel through stagecoach was costly, and it took a long period to travel. However, there were available options for going through the sea using the South American path, but the distance that was covered was also long.
This was the reason that the South Americans opted to provide materials for construction of railroads to safe people from traveling for long periods and in long distances. And also ensure products that were shipped reached their designated destination earlier enough.