Across
- 5. A group of organisms that consist of a common ancestor and all its lineal descendants.
- 6. A measure of the variation of life on Earth
- 7. An area where organisms interact with each other and the physical environment surrounding them
- 9. A type of sampling in which a sample is taken of each strata of the population.
- 12. organic material in the environment
- 14. The size of the population that can be supported indefinitely on the available resources and services of that ecosystem.
- 16. Two organisms that are able to reproduce naturally to produce viable and fertile offspring.
Down
- 1. A line set across a given area, from which the number of organisms in each species along the transect is counted.
- 2. Traditionally a square frame used to study the distribution of organisms within the marked area.
- 3. The offspring of parents from two different species.
- 4. Components of the environment that are living.
- 8. A measure of biodiversity that accounts for not only the number of species present in a given area, but also the relative abundance of each of those species.
- 10. An evolutionary tree that indicates relationships between individuals – based on shared phenotypes
- 11. the non-living components of an ecosystem
- 13. The number of species in a given area
- 15. The role and space that an organism fills in an ecosystem, including all its interactions with the biotic and abiotic factors of its environment.