Answer:
Herd immunity
Explanation:
Herd immunity refers to the resistance of a group of people against infection and the spread of a pathogen. It occurs when a high proportion of the members of that group are resistant against a particular pathogenic infection. When an earlier exposure or vaccination of a large proportion of individuals of a population does not allow the pathogen to spread among and infect the otherwise susceptible members of the population, the population is said to have acquired the herd immunity.
In the given example, vaccination of a large percentage of a population protected the susceptible individuals against a particular microbe. This represents an example of herd immunity.
The answer is genus plasmodium. There are diferent species
under the genus including falciparum, vivax, malariae, and knowlesi. The most
common is P. malariae and is the cause of Malaria that is the cause of most
deaths among young children and pregnant mothers in developing countries.
Half-life = time in which half of material is lost
1/4 = 1/2 x 1/2 so 2 half lives have gone by if only 1/4 of it is left.
age of rock = 2 x half life = 2x1.3 = 2.6 billion years.
Answer: Yes, the zoonotic is the infectious diseases that can be contracted by the people who handle birds.
Explanation:
Zoonotic is the infectious diseases that can be transmitted through birds. Highly infected birds are infectious to the other organism as, it is transmitted from one person to another.The zoonotic infection are caused by the viruses, fungi and bacteria.
Example of zoonotic disease are:
- Animal flu and bird flue
- Anthrax
- Cat scratch fever
Second is the correct answer! :)
