Across
- 4. a record of fossils that have been found, along with their relative age
- 5. chemical reactions in which an organism builds up or break down
- 7. a diagram used to represent a hypothetical relationship between groups of mammals
- 10. increase in size of number of cells and become different
- 13. the study of chemical processes within and relating to living organisms
- 17. when atleast half of all species die out in a relatively short time
- 19. an organism that feeds for energy
- 20. the study of the embryo and its development
- 21. producing new organisms
Down
- 1. any heritable trait that helps and organism survive and reproduce in its environment
- 2. used to identify different organisms, based on the organisms observable traits
- 3. the combination of all the genes present in reproducing population or species
- 6. tendency of an individual genetic characteristics in a population to vary from one another
- 7. basic building blocks of life
- 8. english naturalist, geologist, and biologist, most known for his work in the evolutionary of biology
- 9. ability to survive to reproductive age, find a mate and produce offspring
- 11. a two-part naming system of naming living organisms
- 12. one of the processes by which species change from generation to generation
- 14. an organism that can produce its own food
- 15. change in the properties of a group of organisms over a course of generations
- 16. an offspring resembling their parents
- 18. a classification system for biological organisms