Q. Consider the following terms related to sea ice:

1. Polynya refers to an area of open water that is surrounded by sea ice.
2. Brash ice is sea ice that is attached to the coastline.
3. Fast ice is sea ice that isn't fastened to the coastline.

Which of the statements given above is/are correct?
Answer: Only 1
Notes: Polynya is an area of open water surrounded by sea ice, found in coastal and mid-sea regions. It facilitates heat and moisture loss into the atmosphere, contributing to cloud formation and atmospheric heating. Leads are large fractures in sea ice, allowing direct ocean-atmosphere interaction. Drift ice, or brash ice, is unattached sea ice that moves with winds and currents, while fast ice is fixed to the coastline, seafloor, or grounded icebergs, remaining stationary.