Answer:
A susceptible person is someone who is not vaccinated or otherwise immune or a person with a weakened immune system who has a way for the germs to enter the body. For an infection to occur, germs must enter a susceptible person’s body and invade tissues, multiply, and cause a reaction.
Answer:
Option c (No, T cells left from the previous infection can kill any virus.
)
Explanation:
When ever viral infection occur, body's immune system start to fight against it by activating B-cells and T-cells.
B-cells produce antibodies that bind with virus and act as label. This label indicate virus as foreign substance. Hence T-cells recognize it and kill it. Furthermore, B-cells form memory cell that keep the viral memory. if this viral infection occur again in future, T-cell recognize it and eliminate the virus.This mechanism is called immunity.
A group of the same species, living together and breeding is known as option C. Population.
A species is regularly described because the maximum crucial agency of organisms in which any two human beings of the best sexes or mating sorts can produce fertile offspring. Species means a grouping of associated organisms constituting a scientific unit, occupying a very ordinary region in nature and fulfilling its functions in the preferred organic metabolism in the manner particular simplest for that grouping.
A population is tough and fast of comparable objects or sports which are of a hobby for a few query or experiment. A statistical population can be a set of current objects or a hypothetical and probably countless company of objects conceived.
Learn more about species here:-brainly.com/question/1542287
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Disclaimer: your question is incomplete, please see below for the complete question.
A)community
B)kingdom
C) Population
hence, the answer is option C. Population
Answer:
According to scientists , water occupies up to 60 % of the human body .
The importance of water in the human body are ;
- Transport
- Formation of bodily fluids i.e. saliva
- Digestion
- Regulates body temperatures
- Circulation of nutrients
Explanation:
The reason why it is important to maintain good fluid balance within and without he cells is because , It can dissolve various elements to make then easily absorbed into other system .There are many fluids which rely on water for volume e.g. blood which is the main component of the circulatory systems , water also regulates the temperature and heart pressure ,
Through electrolysis , fluid balance in the cells can be achieved and it also helps to generate nerve impulses .
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