Q. Which of the following statements with regard to the deepest lakes in the world is/are correct?
1.Lake Baikal and Lake Tanganyika occupy the top two positions on the global checklist of maximum lake depths.
2.Both of these deepest lakes are ancient geological rift valleys that contain deep accumulations of bottom sediment layers.
Select the correct answer using the code given below:
Answer: C
Notes:
Explanation:
- Statement 1 is correct: Lake Baikal reaches a maximum depth of 1,637 meters (the deepest), and Lake Tanganyika drops to 1,470 meters (the second deepest). No other lake on Earth exceeds 1,000 meters in depth except these two and the Caspian Sea.
- Statement 2 is correct: Both Baikal and Tanganyika are long-lived rift valley lakes (grabens). Because they have existed for millions of years within active tectonic rifts, their floors have accumulated massive, kilometers-thick layers of runoff sediment that are highly valued for paleoclimate research.
