Natural Selection

6. the name of Darwin's ship
9. the modification of species due to human intervention
10. the imprint or remains of an organism that lived in the past
12. a theory that is based on sexual recombination and mutations
15. this type of structure is similar in different species
17. antibiotic resistance is an example of this type of evidence for evolution
19. this guy was a French naturalist who proposed organisms change based on use and disuse of body parts
20. reproductive success which leads to more surviving offspring
21. this guy proposed and wrote about naturalselection

1. a theory based on characteristic traits developing based on need
2. where Darwin studied after medical school
3. a type of intermediate organism
4. this guy was an English economist who theorized about resources and the growing population
5. this guy calculated the world was created on October 23, 4004 BC
7. a theory that suggests that geological processes have been taking place at a constant rate
8. this type of trait is similar in different species, the structure is different but the function is the same
11. this guy was a Scottish geologist who wrote about geological time
13. what many Europeans believed to be the origin of plants and animals
14. this guy proposed a natural selection theory and shared his research with Darwin
16. this type of structure is sometimes referred to as an evolutionary left-over
18. this gal is who Darwin married