There are 2 of them :-
1) Phagocytes
2) Macrophages.
These WBCs attach themselves to disease causing pathogens & then engulf them resulting in the destruction of the pathogens.
_________
Hope it helps!
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Answer:
Caroline Herschel
Explanation:
She was the first women to discover a comet and calculate its path.
Actually, it is false. P-waves arrive first and then S-waves arrive.
