The deepest part of the ocean is 2,000 metres further down. At this depth, the water pressure is extremely high and life is very difficult for the few creatures that live here. Compared to the other zones, this one has very little life. Since there is no light here, some animals don’t have eyes. When scientists explored the very deepest parts of the ocean, they did not expect to find any life at all. It turned out that there are creatures as far down as 10,000 metres. They usually survive by living close to deep sea vents, “chimneys” that sent out gases from within the earth.

　　(71) _______ Conditions Life (75) _______ How do the animal adapt?

　　Suface

　　to

　　200 metres Sunlight, plants Marines, animals and a variety of fish Many species become dark on the top and light on the (78) _______

　　200-1,000 metres Not

　　enough

　　sunlight, relatively dark Many

　　creatures Many creatures are able to make light with their body. They make the water look like a sky with moving (79)

　　.

　　1,000-4,000 metres ( 72 )

　　_______

　　of Light;

　　“marine Snow” More creatures than (76) _______ Most of the animals are black or red.

　　Below 4,000 metres Dark and empty;

　　(73)

　　_______

　　water pressure Not much life; some small creatures Some small creatures still manage to survive here despite high water pressure.

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