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Across 4. Group of organs working together 5. Used a microscope to examine a thin slice of cork 6. Group of tissues working together to perform a specific function 8. Leeuwenhook used a ________ to view pond water and scrapings from his teeth. 9. Dead plant cell 10. Group of organ systems working together

Down 1. Group of cells working together to perform a specific function 2. First to view microscopic organisms 3. All cells come from ____________ cells. 7. Hooke is responsible for the name "__________"