Fossils

Question 0

sedimentary rock

Answer 0

sedimentary rock is the type of rock that is made of hardened sediment.

Question 1

fossil

Answer 1

fossils are the preserved remains or traces of living things.

Question 2

mold

Answer 2

a mold is a hollow area in sediment in the shape f an organism or of a part of an organism.

Question 3

cast

Answer 3

a cast is a solid copy of the shape of an organism.

Question 4

petrified fossils

Answer 4

petrified fossils are fossils in which minerals replace all or part of an organism.

Question 5

carbon film

Answer 5

a carbon film is an extremely thin coating of carbon on rock.

Question 6

trace fossils

Answer 6

trace fossils provide evidence of the activities of ancient organisms.

Question 7

paleantologists

Answer 7

scientists who study fossils.

Question 8

scientific theory

Answer 8

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

Question 9

evolution

Answer 9

the gradual change in living things over long periods of time.

Question 10

extinct

Answer 10

a type of organism is extinct if it no longer exists and will never again live on Earth.