Across
- 4. animal that gives birth to live offspring and produces milk
- 6. a change in a species making it better able to survive
- 9. at risk of becoming extinct
- 13. no longer existing
- 14. an organism without a backbone
- 16. average weather conditions of an area over time
- 17. eats a variety, including plants, animals and fungi
- 19. large, flat area covered with grasses and has few trees
- 20. organism that eats mainly plants
- 22. when animals leave a habitat for part of the year
- 23. region with a warm summer and cool winter
Down
- 1. a group of the same organisms living in an environment
- 2. an organism’s ability to disguise its appearance
- 3. animal with a backbone that has moist skin and no scales
- 5. grouping based on physical and genetic traits
- 7. a place in nature where an organism lives
- 8. community of living and nonliving things in an area
- 10. area that receives less than ten inches of rain a year
- 11. group of organisms that can reproduce with one another
- 12. organism that eats meat
- 15. forest with at least 160 inches of rain each year
- 18. cold, treeless area of the Arctic region with permafrost
- 21. cold-blooded, breathes air, has a backbone and scales