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Across 7. any thing found in nature that can be used for human benefit 10. home of animals 11. underground passages 13. when a group of animals are in danger of becoming extinct 16. an operation of separating, or dividing, a number into equal parts 17. is the nubmer that will divide the dividend into equal parts 18. not having a backbone 19. to disappear completely, like the dinosaurs 21. harmful waste products created by human garbage 22. heavy rain fall that is seasonal in asia 23. any living thing

Down 1. is the number that results from dividing the dividend by the divisor 2. numbers being multiplied 3. operation of adding a number to itself a specific number of times 4. having a backbone 5. the number that is the result of multiplying the factors 6. a deep, round, hollow container used to carry things 8. sequence of growth and change an animal experiences 9. everything that surrounds an organism 12. to make another of the same kind 14. something used to catch other animals 15. posion used to kill unwanted insects or animals 17. process of turning food into usable energy for the body 20. over turning soil for farming