life over time

Question 1

the remains of an organism

Answer 1

fossil

Question 2

an unborn organism

Answer 2

embryo

Question 3

a group of living organisms consisting of similar features

Answer 3

species

Question 4

similar structures that evolved from a common ancestor

Answer 4

homologous structure

Question 5

having similar functions but not from the same evolutionary origin

Answer 5

analogous structure

Question 6

formed from pre-existing rocks or pieces of once-living organisms

Answer 6

sedimentary rock

Question 7

the surroundings or conditions in which a person, animal, or plant lives or operates.

Answer 7

environment

Question 8

all of the people born and living at about the same time

Answer 8

generation

Question 9

all the inhabitants of a particular town, area, or country

Answer 9

population

Question 10

single; separate.

Answer 10

individual

Question 11

characteristic transmissible from parent to offspring

Answer 11

heritable

Question 12

a distinguishing quality or characteristic

Answer 12

trait

Question 13

the process whereby organisms better adapted to their environment tend to survive and produce more offspring

Answer 13

natural selection

Question 14

the production of offspring

Answer 14

Reproduction

Question 15

the state or fact of continuing to live or exist

Answer 15

survival

Question 16

a change or the process of change by which an organism or species becomes better suited to its environment

Answer 16

adaptation

Question 17

organisms best adjusted to their environment are the most successful in surviving and reproducing

Answer 17

survival of the fittest

Question 18

there are no known living individuals left in the species

Answer 18

extinction

Question 19

an organism’s ability to pass its genetic material to its offspring

Answer 19

fitness

Question 20

changes in the heritable traits of a population of organisms as successive generations replace one another

Answer 20

evolution