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<DIV><FONT size=2 face=Arial> I am listening to Quirks and Quarks on CBC
Radio (89.1 fm) and the author of this book and some other scientists are
talking about for one thing the growing number of "dead zones" in our oceans.
These occur usually where fertilizer run-off from agriculture and other
agricultural waste congregates in the water bodies en masse and makes it
anaerobic (sucks out most of the oxygen) so very little can live in it,i
ncluding plankton - but jellyfish can live in low-oxygen conditions so they
abound in dead zones.. Climate change exacerbates the problem.She said these
huge blobs of water are viscous- that nothing will mix with them. But dead zones
can revert to normal healthy water if the agriculture stops. For example she
said the Black Sea was a huge total dead zone, but in 1989 when Russia was
in difficulty, they stopped supporting agriculture there, and the Sea had
reverted to a normal healthy body of water by 1993. Other scientists talk
about acidification, coral bleaching, huge plastic floating
garbage patches, tons of lost fishing nets and crab traps just left to
drift, which continue to catch things once abandoned, and are estimated to be
trapping and killing about 10% of ocean creatures per year. Very interesting and
extremely disturbing.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>You can listen to this in a podcast if you go to <A
href="http://www.cbc.ca/quirks/archives/09-10/qq-2009-09-12.html">http://www.cbc.ca/quirks/archives/09-10/qq-2009-09-12.html</A></FONT>
</DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Lori Strothard</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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