Fossils

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Fossils

1. SEAR

Geologist divide the time between Precambrian Time and the present into three long units of time

2. OFLISSS

are persevere remains or traces of living things

3. AFILEFLH

of a radioactive element is the time it takes for half of the radioactive atoms to decay

4. OCIFBANLMR

an extremely thin layer of coating on a rock

5. ULTEAESAGOB

a rock is the number of years that have passed since the rock form

6. ILOSSIFEXND

a fossil must be widely distributed and represent an organism that existed for a geologically short period of time.

7. GETAVAIEELR

a rock is its age compared to the ages of other rocks

8. TOCIAFRSSLSE

provide evidence of the activities of ancient organisms

Fossils

1. SEAR

Geologist divide the time between Precambrian Time and the present into three long units of time

E	R	A	S

2. OFLISSS

are persevere remains or traces of living things

F	O	S	S	I	L	S

3. AFILEFLH

of a radioactive element is the time it takes for half of the radioactive atoms to decay

H	A	L	F	L	I	F	E

4. OCIFBANLMR

an extremely thin layer of coating on a rock

C	A	R	B	O	N		F	I	L	M

5. ULTEAESAGOB

a rock is the number of years that have passed since the rock form

A	B	S	O	L	U	T	E		A	G	E

6. ILOSSIFEXND

a fossil must be widely distributed and represent an organism that existed for a geologically short period of time.

I	N	D	E	X		F	O	S	S	I	L

7. GETAVAIEELR

a rock is its age compared to the ages of other rocks

R	E	L	A	T	I	V	E		A	G	E

8. TOCIAFRSSLSE

provide evidence of the activities of ancient organisms

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Fossils

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Fossils

Fossils