1.For many scientists, oceans are the cradle of life.
A. But all over the world, chemical products and nuclear waste continue to be dumped into them.
B. Coral reefs, which are known to be the most beautiful places of the submarine world, are fast disappearing.
C. The result is that many species of fish die because of this pollution.
D. Of course man is the root cause behind these problems.
6. Man has long since ruined the places he visits — continents and oceans alike.