Which of the following is always a component of allergies?
Out of all the answers shown above the one that best represents the one that is always a component of allergies is answer choice A) histamine.
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The answer is B. immune system.
D. would be the correct answer, long term means it would take you quite a while to reach it for example you have a goal to save 1,000 dollars in order for you to buy your first car and still have some left for gas, this is not a goal your going to reach over night it is a goal that is going to take sometime to reach.