Across
- 4. The range and variety of genes, species and habitats within a particular region.
- 7. Section of DNA
- 8. competition between organisms of the same species
- 9. Alternative form of a gene
- 10. How an organism fits into its environment
Down
- 1. number of individuals of the same species in an area
- 2. the genetic composition of an organism
- 3. can colonise bare rock or ground
- 5. Method of maintaining ecosystems and the living organisms that occupy them.
- 6. organism that synthesises organic molecules from simple inorganic ones.