26. - long term energy recourse used by 33. and reproduce in a 27. - an enzyme created by the pancreas that is used to control and breakdown in the body. 28. - a type of protein produced by the body to improve chemical reactions that are carried out in the body. 29. - multiple forms of fats. 30. - the gland that is responsible for producing saliva. 31. - the process in which inherited traits within a population change over generations such that a new species sometimes arises. 32. - a historical sequence of life indicated by fossils found in layers of the earth's crust. - a trait that improves an individual's ability to survive and reproduce in a particular environment. 34. - a group of organisms that are closely related and can mate to produce fertile offspring. 35. - the remains or physical evidence of an organism preserved in layers of the earth's crust. 36 - this person was the author of the theory of evolution and spent most of his time as a young man studying in the galapagos islands. _- a genetically determined characteristic. 38. - the process by which individuals that are better adapted to their environment survive and reproduce more successfully than other individuals do. 39 - the human practice of breeding animals or plants that have certain desired characteristics 40. _- the famous ship that the author of the theory of evolution did most of his work on is named the 41. the formation of new species as a result of evolution