The correct answer is option A
A person that is having an allergy with pollen grains should take antihistamines.
When there is an allergic reaction in the body then the body releases histamines which evokes immune response.
As a result of this the person starts sneezing, runny nose, hives et cetera.
So, one should take antihistamines to prevent the action of histamines on the body.
Answer:
The answer is Covection.
Explanation:
Convection current occurs where hot / warm air rises and cold air drops and replace it.
Answer:
This type of secretion is known as Holocrine. Whereby the entire cell and content is released
