Question

Why
ice berge
can be
be a greate thread​

Answer 1

Answer:

Icebergs can be a great threat because of global warming, the glaciers are melting, and increasing the sea level can make the coastal places flood.

 Actually, the icebergs aren't the threat the main threat is Global Warming.

Answer 2

Answer:

Icebergs breaking off Antarctica, even massive ones, do not typically concern glaciologists. But the impending birth of a new massive iceberg could be more than business as usual for the frozen continent.