[PPSC PRINCIPAL, ITI (WOMEN) 2024]

19. Which of the following lines of evidence do geologists and climatologists follow to gain insights into the earth's climate history?
1. Examining the widths of tree rings
2. Analysing remains of plants, pollen, or microscopic organisms in lake beds and marine mud.
3. Studying fossils and rock types to infer what the climate must have been like.
4. Examining tiny air bubbles entrapped into ice

Choose the most appropriate answer from the options given below

1. 1, 2, 3, 4

2. 2 and 3 only

3. 1 and 4 only

4. 3 and 4 only

Correct Answer :

1, 2, 3, 4