Evolution chap 6

(nature selects) species with the favorable trait survives longer and reproduce, passing down their traits

a trait that gives an organism an advantage to survive

the offspring are not all the same, caused by sexual reproduction

organisms compete for limited resources to survive

the organisms with the best traits have the best chance of surviving and then passing down those traits

any trace or remains of an organism

an organism will not decay if its completely protected from decomposers (bacteria)

minerals replace the tissues of the organisms including bones

an organism is covered in layer of rock particles which harden while the organism decays

compare fossils found in different layers of sedimentary rock to estimate the age

scientists compare the amount of radioactive substance with the amount of stable substance

parts of different organisms that are similar in structure, give evidence that these organisms have a common ancestor

structures that are similar in function but not structure

body part that is reduced in size and does not have a function

study of the development of the embryo

forward facing eyes, opposable thumbs, flexible shoulders, rotating forelimbs, binocular vision

random changes in DNA and RNA

Humans interact/select the best trait to be passed down

the naming of organisms based on traits

a system that separates organisms based on traits

the study of a structure of a plant or animal

the study of a structure of a plant or animal