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1answer
41 views

Why are some chemical dangerous to aquatic environment only?

Recently I was changing the thermal grease on my PC. I have noticed on the back of box, that the grease is not dangerous when ingested or when touched. But there was specifically stated, that is ...
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1answer
70 views

A wierd looking fish with a shield

I have found this photo in a local news page. The page claims that this fish is a new species that was found by a Malaysian fisherman. Is this true? or it is a known fish and it has a name already?
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71 views

Would Bubling Oxygen Through “Dead Zones” Like A Fish-Tank Make Much Difference?

I am a dilettante when it comes to dead zones. I realize that they vary from fleeting algal blooms to continuous dead zones. For the continuous dead zones it would seem to me that adding a "bubbler" ...