Across
- 3. a change or difference in condition, amount, or level, typically with certain limits
- 4. is the process of change in all forms of life over generations
- 6. French naturalist
- 10. the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution
- 11. existing in something as a permanent, essential, or characteristic attribute
- 12. is change in the heritable characteristics of biological populations over successive generations
Down
- 1. the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations
- 2. English naturalist, geologist and biologist, best known for his contributions to the science of evolution
- 5. is the use of any combination of materials, coloration, or illumination for concealment
- 7. a change or the process of change by which an organism or species becomes better suited to its environment
- 8. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
- 9. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.