Arrange the following levels of geological eras in the correct order. Write the letter of the oldest period

next to 1 and the letter of the newest period next to 10.



A. Triassic
B. Permian
C. Archaean
D. Cretaceous
E. Devonian
F. Cambrian
G. Silurian
H. Jurassic
I. Ordovician
J. Carboniferous
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.


ANS:1.
C
2. F
3. I
4. G
5. E
6. J
7. B
8. A
9. H
10. D

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