Answer:
The correct answer is - they are both systems that are performing similar functions.
Explanation:
In the given question there are two different entities that do a similar kind of work or perform similar functions, however, the systems are different as one system involves the manpower of a worker whereas the other system involves the high power of a bulldozer.
The work is similar but the amount of the work varies as manual work done by a worker is less in comparison to the bulldozer.
<span>Allergy-
A medical condition that causes someone to become sick after eating, touching, or breathing something.
Allergen
A substance or object that causes allergies.
Hope this helps!!
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