Across
- 4. taking the ratio of marked to unmarked individuals can help you determine population size
- 7. group of organisms of different species that live in the same area
- 10. an organism’s ability to survive until they can reproduce
- 12. Primary producers are always _______; First trophic level
- 14. study of population dynamics/fluctuations
- 16. responsible for the rings in trees
- 18. Plants with a vascular system are called ________
- 19. Biome with low scattered plant life; animals specialized to conserve water; dry and hot
- 20. Organisms are brightly colored to let others know they are dangerous; ______ coloration
- 22. Plants lacking a vascular system. Instead have simpler structures for transporting water/nutrients
- 23. _____ law states the bigger the species, the fewer individuals can cohabitate a given area
Down
- 1. +/- interaction where one species kills and eats another
- 2. Refers to events caused by human activity
- 3. number of species in a particular area
- 5. Communities of organisms and all the abiotic factors (land, air, water, etc)
- 6. death of the last individual of a species
- 8. Transition area between river and ocean
- 9. Ocean zone where light penetrates through
- 11. Carnivore at the top of the food chain; highest trophic level
- 13. transport of sugars and materials from the leaves to other parts of the plant
- 15. group of individuals of the same species that live in the same area
- 17. Region of a plant where cells are actively dividing to for plant growth
- 21. Plant vessel that transports water and dissolved minerals throughout the plant