1. Earth Sciences: Re: Does rainwater mix with saltwater in the ocean?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Oct 22 15:59:50 2001
2. Earth Sciences: Re: Results of efforts to prove/disprove T. Gold's theories on hydrocarbons?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Fri Sep 17 17:11:11 1999
3. Earth Sciences : Re: Is Bilharzia found in the Western Cape , David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Wed Apr 23 15:20:29 1997
4. Evolution: Re: Why does Australia have so many native marsupials , David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Wed Nov 29 12:53:41 2000
5. Earth Sciences: Re: How do scientists know if it is a freshwater or saltwater fossil?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Feb 25 11:36:25 2002
6. Evolution: Re: what did the soft parts on trilobites do?, David Kopaska-Merkel, Staff Economic Geology Division Fri May 13 15:41:19 2005
7. Chemistry: Re: Nitrate Test for Water, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Thu Jul 30 09:17:34 1998
8. Evolution: Re: do scientists believe all dinosaurs were cold-blooded?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Wed Feb 28 15:19:50 2001
9. Earth Sciences : Re: Is the effluent from acid mine drainage 'hard' or 'soft' water?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Thu Jul 24 08:40:09 1997
10. Physics: Re: water absorbption formula(s) for diverse materials: wood, ceramic, chalk?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Fri May 17 16:03:13 2002
11. Earth Sciences: Re: What are the steps to removing a fossil from a rock?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Tue May 9 08:21:41 2000
12. Chemistry: Re: What are chemical details of fossil formation., David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Nov 22 10:41:19 1999
13. Earth Sciences: Re: What creates a mountain, why do they grow so tall, whre are most?, David Kopaska-Merkel, Staff Economic Geology Division Thu Oct 15 07:34:13 2009
14. Earth Sciences: Re: How do people find gold? Is there a special device that locates it?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Thu Jan 3 16:42:49 2002
15. Environment : Re: Can the pH level of a stream vary?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Wed Dec 8 08:40:41 1999
16. Earth Sciences: Re: How did nitrogen get to be most prevalent in the atmosphere?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Oct 16 15:05:18 2000
17. Evolution: Re: Has there ever been a Total Extinction Event?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Fri Oct 13 09:51:31 2000
18. Earth Sciences: Re: Where did all the ocean water come from?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Thu Oct 28 08:50:58 1999
19. Earth Sciences: Re: Can volcano get rid of high silica buildup without a large explosion?, David Kopaska-Merkel, Staff Economic Geology Division Fri Mar 18 10:35:36 2005
20. Earth Sciences: Re: How is Granite formed, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Sep 18 11:56:34 2000
21. Earth Sciences: Re: What are the contents of well water?, David Kopaska-Merkel, Staff Economic Geology Division Fri Oct 27 06:52:04 2006
22. Earth Sciences: Re: What happened to the Feldspar in Quartzite during the metomorphic process?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Sep 27 16:39:08 1999
23. Evolution: Re: What are the identifying traits of a gastrolith?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Wed Nov 10 10:35:13 1999
24. Evolution: Re: What was the color of the primordial soup ocean?, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Mon Jan 22 15:34:15 2001
25. Environment & Ecology: Re: What is the effect of low levels of Phosphoruse on an aquatic ecosystem???, David Kopaska-Merkel, Staff Hydrogeology Division, Geological Survey of Alabama Thu Aug 12 10:37:44 1999