Growth of Mining on Land May Promote Invasions at Sea by Sarah Zielinski | Free Audiobook

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Title: Growth of Mining on Land May Promote Invasions at Sea
Author: Sarah Zielinski
Narrator: Mark Moran
Format: Unabridged
Length: 3 mins
Language: English
Release date: 04-25-15
Publisher: Science News
Genres: Science & Technology, Magazine & Radio

Summary:
Some 90 percent of the worlds trade spends at least part of its journey at sea. Ships carry everything from oil to cars to food to rubber duckies. They also carry huge amounts of ballast water to increase their stability. When the weight of the water isnt needed - because the ship has taken on cargo, for instance - it gets discharged.
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