Answer: downfall,death,doom,failure
Explanation: demise means a negative outcome often failure
A vaccine is a biological preparation that provides immunity to a particular infectious disease. It typically contains an element that resembles a disease causing microorganism.
Explanation:
Vaccine is used to stimulate our immune system and provide immunity against a particular disease by producing antibodies against that disease.
Process of injecting vaccine in our body is termed as vaccination.
Vaccine is made from some weakened part or killed forms of the microorganism that cause a particular disease for which vaccine is being prepared. Toxin parts or proteins strands of microorganism can also be used for this purpose.
First vaccine was developed in 1796. This vaccine was for smallpox and it was developed by Edward Jenner.
Answer:greedy is driven by an act of wanting something but not being satisfied even after you have received it. Issues of greedy make someone to not be happy no matter how much they have achieved they still want more and more and it is never enough ; they want it all for themselves.
Love is driven by a pure heart that get satisfied by what ever they received in whatever amount as long as it is what they desire or love so it is driven by pure emotions and pure desires to achieve what one wants and be satisfied with the amount they receive from that.