Across
- 2. an individual animal, plant, or single-celled life form
- 3. genetic change that causes new and different characteristics
- 9. an adaptation used to hide or disguise
- 10. a material that is found in nature that is essential or useful to people
- 12. the careful use of resources so that they will last as long as possible
- 13. the variety of life in the world, a habitat, or an ecosystem
Down
- 1. a particular group of organisms living in the same area
- 4. the range of conditions an organism can withstand
- 5. the way an organism looks, behaves, or is built that best suits it for survival
- 6. a large quantity
- 7. a long term extent of dry conditions
- 8. to process used products into new products by using materials again
- 11. no living members survive of this species