Answer:
The first person to observe cells was Robert Hooke. Hooke was an English scientist. He used a compound microscope to look at thin slices of cork.
Explanation:
Sorry if I am wrong let me know if I am.
the most often the start of a scientific investigation. is observation
The answer is breaking litter box training
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Explanation:</h3><h3>AND FOR YOUR KNOWLEDGE IT'S NOT A BIOLOGY QUESTION.</h3>
y para tu conocimiento no es una cuestión de biología.