Across 2. language used for scientific names 4. the largest kingdom 7. used to classify organisms 10. organisms share behavior(ex: Felidaes) Down 1. largest unit of classification 2. started current system of taxonomy 3. the most specific unit of classification 4. classification system in the 300's 5. the class we belong to 6. along with species, make up the name 8. study of classification of organisms 9. an order within the mammalia