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Change over time in Evolotion

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						3		4
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Across:

2.	__________ is a historical sequence of life indicated by fossils.
3.	the most specific group of the seven levels of classification
5.	Fossils are usually formed when a dead organism is covered by a layer of this.
6.	A characteristic that helps an organism survive in it's environment
7.	Scientists estimate that the _____ is 4.6 million years old

Down:

1.	the remnant of a once-useful anatomical structure.
2.	Solidified remains of organisms that once lived.
4.	because of this, scientists think all living things share a common ancestor.

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Change over time in Evolotion

1

V

E

S

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2

F

O

S

S

I

L

R

E

C

O

R

D

I

O

G

3

S

P

4

E

C

I

E

S

I

V

5

S

E

D

I

M

E

N

T

6

A

D

A

P

T

A

T

I

O

N

I

L

L

L

S

U

S

T

7

E

A

R

T

H

R

I

U

O

C

N

T

U

R

E

S

Across:

2.	__________ is a historical sequence of life indicated by fossils.
3.	the most specific group of the seven levels of classification
5.	Fossils are usually formed when a dead organism is covered by a layer of this.
6.	A characteristic that helps an organism survive in it's environment
7.	Scientists estimate that the _____ is 4.6 million years old

Down:

1.	the remnant of a once-useful anatomical structure.
2.	Solidified remains of organisms that once lived.
4.	because of this, scientists think all living things share a common ancestor.

© 2015 PuzzleFast.com, Noncommercial Use Only