Although there has never been permanent human habitation on Antarctica, it is still subject to environmental pressures.How have the waters around Antarctica been mismanaged, and what action has been taken to protect Antarctica's natural resources until 2048?
Some of Antarctica's waters are overfished, and illegal fishing remains a continual problem. China has announced plans to harvest over 2 million tons of Antarctic krill per year, alarming conservationists (krill are a vital part of the marine food chain). Japanese whalers have been active in the Antarctic for many years, taking 250 minke whales in 2014, though the UN has ruled Japan's whale hunts illegal.
The Antarctic Treaty, negotiated in 1959 and signed by 45 countries, including those laying claims, forbids any exploitation of the continent's natural resources until 2048.
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If the oceans became acidic, they would start to
A. release more CO2, which would make them even more acidic. B. absorb more CO2, which would make them even more acidic. C. release more CO2, which would raise the pH. D. absorb more CO2, which would raise the pH.
Present-day hominids arose from the ____________________ and ____________________ groups. Fill in the blank(s) with the appropriate word(s)
_________ large, fairly steep-sided cones composed of lavas and pyroclastic layers
A) composite B) shield C) cinder cones D) stratospheric
The process of one plate sliding beneath another plate is called
A. subduction. B. transformation. C. divergence. D. convergence. E. conduction.