7.5 too, its kinda of ratio, 1cm : 1Km to 7.5cm : x
x will be equal 7.5 km
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.
The answer is Rewrite
Hope this helps! :P
Answer:
Populations have variation in traits due to random mutation, crossing over and environmental conditions.
