Chapter 6- Change Over Time

Question 0

evolution

Answer 0

the process of change over time

Question 1

adaptation

Answer 1

a trait that increases an organism’s ability to survive and reproduce
ex. Beak shape

Question 2

fossil

Answer 2

the preserved remains or traces of an organism that lived in the past

Question 3

natural selection

Answer 3

the process by which individuals that are better adapted to their environment are more likely to survive and reproduce more than other members of the same species

Question 4

variations

Answer 4

any difference between individuals of the same species

Question 5

punctuated equilibrium

Answer 5

where species evolve during short periods of rapid change and then don’t change much

Question 6

homologous structures

Answer 6

similar structures that related species have inherited from a common ancestor

Question 7

scientific theory

Answer 7

a well-tested concept that explains a wide range of observations

Question 8

species

Answer 8

a group of similar organisms that can mate with each other and produce fertile offspring

Question 9

gradualism

Answer 9

involves small changes that add up to major changes over a long period of time