Across
- 3. area’s sum of total organisms
- 4. Scientist who first defined natural selection as a cause of evolution
- 8. community experiences predictable change over time and reaches equilibrium
- 14. organism’s use of resources and its role in a community
- 16. an example of invasive species in North America
- 17. only in a certain area, susceptible to environmental changes
- 18. drives a feature of a group to intermediate trait
- 19. Partner scientist of Darwin
- 20. speciation when individuals are reproductively isolated in the same area
- 21. disappearance of species, when species cannot adapt quickly enough to the changing environment or due to a human cause
Down
- 1. when organisms in same area share resources by separating time/niche/etc
- 2. a trait that promotes reproductive success in response to environmental pressure
- 5. drives a feature of a group in one direction
- 6. genetic makeup of a population changing over generations
- 7. Ecological succession that starts without soil
- 9. species with narrow niches
- 10. speciation due to geographic isolation
- 11. the creation of new species
- 12. Ecological succession that starts with the soil
- 13. drives a feature of a group towards the extreme
- 15. species with wide niches