Across
- 1. the process by which living organisms have developed and adapted into different forms
- 3. set out purposes or reasons/make the relationships between things evident
- 5. a hostile, barren landscape where less than 250 mm of precipitation occurs annually
- 8. a habitat that is small or limited in extent and that differs from the surrounding habitat
- 9. a biome with grassy plains and few trees, in the tropics and subtropics
- 11. identify/comment on similarities and/or differences
- 14. areas of permanently frozen ground
- 15. state the main points of a topic/give characteristics and main features
- 19. the gradual process by which an ecosystem develops and changes in a region that has not previously been colonized
- 20. the animal life characteristics of an area, region, or environment
Down
- 2. a biome found far north in asia and alaska, characterized by long, cold, dark winters, and short cool summers
- 4. the plants of a particular area, region or environment
- 6. an increase in nutrients in a body of water results in a rapid growth of algae
- 7. a hardy species which is capable of being the first to colonize disturbed or newly formed environments
- 10. the action of clearing forested areas
- 12. gross primary productivity
- 13. restoring an area of land to its natural undistributed state
- 16. the material in cells that carries information about how a living organism will look and function
- 17. pores in the leaf or stem of the plant
- 18. the basic units of heredity (characteristics) passed down from parent to young