Q. Terms, ‘A68a’, ‘A-76’, ‘A23a’, ‘B-15’ pertains to:
Answer: Iceberg
Notes: A68a split from the Larsen Ice Shelf on the West Antarctic Peninsula in 2017. Iceberg A-76, the world's largest, calved from the Ronne Ice Shelf and is now in the Weddell Sea. A23A, the second largest, broke off Antarctica in 1986 and also floats in the Weddell Sea. B-15, the largest recorded iceberg by area, calved from the Ross Ice Shelf in March 2000.