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Answer:
Explanation:
__3__ Anton van Leeuwenhoek observed small organisms he called “animalcules.”
___2___ Robert Hooke was the first to use the word “cell.”
___4___ Matthias Schleiden theorized that plants are made of cells.
___5___ Theodor Schwann theorized that animals are made of cells.
___1___ Hans and Zacharias Janssen created the first microscope.
___6___ Rudolf Virchow theorized that cells come from other pre-existing cells