C Complete the text with the correct form of the Present Perfect Simple, the Present Perfect Continuous or the Past Simple of the verbs in brackets.
The word "iceberg" probably comes from the Norwegian word “isberg”, which means "ice mountain". Every year about
10000-15000 icebergs (1) (be) one of the biggest dangers in the sea. The famous Titanic (2) (sink) when it collided in
1912 and many people (3) (lose) their lives. As a consequence of this tragedy, thirteen countries (4) (form) the
International Ice Patrol in 1914. This organization (5) (give) information to ships about icebergs ever since.
Biologist (6) (study) icebergs for a long time to find out how they influence ocean life. When an iceberg melts, it leaks
nutrients. Recent studies (7) (show) that the water surrounding icebergs is full of plankton, fish and other sea life.
Scientists (8) (notice) the way icebergs break up when they reach warmer waters. One of the biggest icebergs (9)
(break) free from the Ross Ice Shelf in Antarctica in 2000. It was 295 km long and 37 km wide!

eeeeroock    3   03.02.2021 10:48    19