Across
- 2. more individuals are born than survive to reproduce
- 5. individuals of a species vary within a generation
- 6. individuals with characteristics that are best suited to the environment is also known as 'survival of the .......'
- 7. the first name of the man who contributed to the theory of evolution
- 8. refers to the formation of new species
- 10. who individuals pass their variations to
- 12. whereby an organism has characteristics enabling it to survive under current environmental conditions. It will then pass these characteristics to its offspring
- 16. something that carries the information that determines your traits that are passed on to you from your parents
- 17. refers to the variety of living things
- 19. the gradual change of organisms into new species over a long period of time due to the process of natural selection from a common ancestor
Down
- 1. required for new species to form
- 2. when the environment may be changed greatly through the activits of organisms, resulting in long term changes in the ecosystem
- 3. a group of the same species living in an area together
- 4. if an environmental change occurs those organisms with these variations will survive
- 9. the surname of the man who contributed to the theory of evolution
- 11. how individuals pass on their characteristics
- 13. a variation that an organism has that helps it to survive in a particular environment
- 14. when an organism no longer exists
- 15. a type of variation that occurs in a species
- 18. when changed populations may not be able to interbreed with other populations so species ......