Without the global ocean there would be no life on Earth.
It is seriously worrying, then, that we are damaging the oceans on a scale that is unimaginable to most people.
We now know that human activity can have serious influences on the vital forces working on our planet. We have fundamentally changed our global climate and are just beginning to understand the consequences of that.
As yet largely unseen, but just as serious, are the influences we are having on the oceans.
A healthy ocean has diverse ecosystems and strong and healthy habitats. The actual state of our oceans is a far cry from this natural level.
A large quantity of human pressures are being exerted both directly and indirectly on ocean ecosystems the world over. Consequently ecosystems are collapsing as marine species are driven towards extinction and ocean habitats are destroyed. With the decrease and removement of their diversity, ocean ecosystems are losing their natural recovery.
9.The 2nd and the 3rd paragraphs are given mainly to describe ______.
A.what the oceans look like
B.what the oceans are made up of
C.what live in the oceans
D.what functions the oceans have
10.The oceans provide all the following except ______.
A.various marine creatures
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