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According to these sources, foxes produce an extraordinarily wide variety of calls, and can imitate the calls of a wide variety of prey species. Maybe it's no coincidence that humans also have this ability, and that humans and foxes are among the least-endangered species of apex predator? Have studies tested whether the diversity of sounds a species can articulate is correlated with its position on the food chain or its modern conservation status? Neon Merlin 03:50, 25 April 2014 (UTC)
Why on the page about electric conductor is not been contain about the all ways of including a conductors in a electric which always been setting up the all electrical rules? I seen, that a parallel or a simple insertings of all conductors in a electric is been most interested than a material structure of all conductors. More thanks!-- Alex Sazonov ( talk) 10:36, 25 April 2014 (UTC)
Sitting on the porch I encountered what I thought was a fire ant - it looked exactly like one but with unusually large mandibles, and it's movements were certainly characteristic of one too. But when I went to relocate it, to my surprise it dropped down on a silky thread! So just out of curiosity, I decided to place it in a large fire ant hill on the edge of the property. In fact, it just meandered about on the hill for a while without so much as raising suspicion from the normally-aggressive residents. Any ideas what kind of spider it was? I didn't have a chance to get a photo, unfortunately. 70.117.71.28 ( talk) 15:59, 25 April 2014 (UTC)
Why are slow neutrons better at inducing nuclear fission than fast neutrons? 65.92.5.76 ( talk) 17:49, 25 April 2014 (UTC)
References to the cross-section are not an answer; that concept is just a way of expressing how likely the reaction is. It's like saying that the star Canopus is brighter than Alcor because its magnitude is a lower number, when the magnitude is just a way of expressing the brightness.
I suspect that there is no simple answer. -- 50.100.193.30 ( talk) 23:00, 25 April 2014 (UTC)
I saw this small bird in Detroit. It occurred to me that it could be a female cardinal, as females often have less color, but the pics I found didn't much look like it. Same for a female American robin, and they tend to be more orange than red, in any case. I did get a cell phone pic, but it's of such low resolution it may not be of much use here. StuRat ( talk) 17:58, 25 April 2014 (UTC)
"This off-topic sub-thread was started by an IP user who is a suspected sockpuppet of a banned user. Let's not feed the troll. SteveBaker ( talk) 14:00, 26 April 2014 (UTC)" |
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The following discussion has been closed. Please do not modify it. |
Note that possessive its has no apostrophe, although it is written above with one in error, by confusion with the common possessive ending -'s and the contraction it's used for it is and it has. Wikipedia provides a helpful table of the correct usages in English, German and French. 84.209.89.214 ( talk) 22:09, 25 April 2014 (UTC)
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It will help if the hatting administrator explains why they claim this response to the OP's question is "off-topic". Should SB who has posted their opinion on the same subject earlier interfere with dialog now? JustAnotherUploader ( talk) 23:48, 27 April 2014 (UTC)
My sister's eyes change color. From birth until about 3 months old they changed between gray, green, blue and gold, like the girl's contact lenses here: http://4.bp.blogspot.com/-ctwEOwlzmYc/UGnUCTNnciI/AAAAAAAAAD4/WKZwNT_Ibe8/s1600/girl2.jpg By 4 months old she had hazel eyes and they stayed hazel until she was 12 years old. When she was 12 they turned light green for about one whole day and she didn't even notice until her friends started asking her about her contact lenses. But she wasn't wearing contacts! The next day her eyes were still green but you could see the hazel coming back. When she turned 14 her eyes started turning almost black during the winter and in the summer they turn light brown, not hazel but light brown. Now its spring and she has one light brown eye and one dark brown eye. This might sound crazy but its true. Her eye color changes were noticed not only by her but by her friends and family, sometimes even before she had noticed it herself! So what does this mean? She also wants to know if they'll ever change back to blue or green. — Preceding unsigned comment added by 68.8.106.52 ( talk) 18:34, 25 April 2014 (UTC)
It seems to me that a nuclear fusion reaction like deuterium + tritium --> helium + neutron should result in an energy loss rather than an energy gain. The nuclear binding energy in a nucleus should be approximately proportional to the number of pairs of nucleons. Well, deuterium has one pair of nucleons, tritium has three pairs, while helium has six. So it seems that there should be an increase in nuclear binding energy, rather than a decrease. 65.92.5.76 ( talk) 19:11, 25 April 2014 (UTC)
EDIT: Ignore question, I just realized that binding potential is negative. 65.92.5.76 ( talk) 19:23, 25 April 2014 (UTC)
It is about 1 inch long. Gil_mo ( talk) 20:05, 25 April 2014 (UTC)
Science desk | ||
---|---|---|
< April 24 | << Mar | April | May >> | April 26 > |
Welcome to the Wikipedia Science Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
According to these sources, foxes produce an extraordinarily wide variety of calls, and can imitate the calls of a wide variety of prey species. Maybe it's no coincidence that humans also have this ability, and that humans and foxes are among the least-endangered species of apex predator? Have studies tested whether the diversity of sounds a species can articulate is correlated with its position on the food chain or its modern conservation status? Neon Merlin 03:50, 25 April 2014 (UTC)
Why on the page about electric conductor is not been contain about the all ways of including a conductors in a electric which always been setting up the all electrical rules? I seen, that a parallel or a simple insertings of all conductors in a electric is been most interested than a material structure of all conductors. More thanks!-- Alex Sazonov ( talk) 10:36, 25 April 2014 (UTC)
Sitting on the porch I encountered what I thought was a fire ant - it looked exactly like one but with unusually large mandibles, and it's movements were certainly characteristic of one too. But when I went to relocate it, to my surprise it dropped down on a silky thread! So just out of curiosity, I decided to place it in a large fire ant hill on the edge of the property. In fact, it just meandered about on the hill for a while without so much as raising suspicion from the normally-aggressive residents. Any ideas what kind of spider it was? I didn't have a chance to get a photo, unfortunately. 70.117.71.28 ( talk) 15:59, 25 April 2014 (UTC)
Why are slow neutrons better at inducing nuclear fission than fast neutrons? 65.92.5.76 ( talk) 17:49, 25 April 2014 (UTC)
References to the cross-section are not an answer; that concept is just a way of expressing how likely the reaction is. It's like saying that the star Canopus is brighter than Alcor because its magnitude is a lower number, when the magnitude is just a way of expressing the brightness.
I suspect that there is no simple answer. -- 50.100.193.30 ( talk) 23:00, 25 April 2014 (UTC)
I saw this small bird in Detroit. It occurred to me that it could be a female cardinal, as females often have less color, but the pics I found didn't much look like it. Same for a female American robin, and they tend to be more orange than red, in any case. I did get a cell phone pic, but it's of such low resolution it may not be of much use here. StuRat ( talk) 17:58, 25 April 2014 (UTC)
"This off-topic sub-thread was started by an IP user who is a suspected sockpuppet of a banned user. Let's not feed the troll. SteveBaker ( talk) 14:00, 26 April 2014 (UTC)" |
---|
The following discussion has been closed. Please do not modify it. |
Note that possessive its has no apostrophe, although it is written above with one in error, by confusion with the common possessive ending -'s and the contraction it's used for it is and it has. Wikipedia provides a helpful table of the correct usages in English, German and French. 84.209.89.214 ( talk) 22:09, 25 April 2014 (UTC)
|
It will help if the hatting administrator explains why they claim this response to the OP's question is "off-topic". Should SB who has posted their opinion on the same subject earlier interfere with dialog now? JustAnotherUploader ( talk) 23:48, 27 April 2014 (UTC)
My sister's eyes change color. From birth until about 3 months old they changed between gray, green, blue and gold, like the girl's contact lenses here: http://4.bp.blogspot.com/-ctwEOwlzmYc/UGnUCTNnciI/AAAAAAAAAD4/WKZwNT_Ibe8/s1600/girl2.jpg By 4 months old she had hazel eyes and they stayed hazel until she was 12 years old. When she was 12 they turned light green for about one whole day and she didn't even notice until her friends started asking her about her contact lenses. But she wasn't wearing contacts! The next day her eyes were still green but you could see the hazel coming back. When she turned 14 her eyes started turning almost black during the winter and in the summer they turn light brown, not hazel but light brown. Now its spring and she has one light brown eye and one dark brown eye. This might sound crazy but its true. Her eye color changes were noticed not only by her but by her friends and family, sometimes even before she had noticed it herself! So what does this mean? She also wants to know if they'll ever change back to blue or green. — Preceding unsigned comment added by 68.8.106.52 ( talk) 18:34, 25 April 2014 (UTC)
It seems to me that a nuclear fusion reaction like deuterium + tritium --> helium + neutron should result in an energy loss rather than an energy gain. The nuclear binding energy in a nucleus should be approximately proportional to the number of pairs of nucleons. Well, deuterium has one pair of nucleons, tritium has three pairs, while helium has six. So it seems that there should be an increase in nuclear binding energy, rather than a decrease. 65.92.5.76 ( talk) 19:11, 25 April 2014 (UTC)
EDIT: Ignore question, I just realized that binding potential is negative. 65.92.5.76 ( talk) 19:23, 25 April 2014 (UTC)
It is about 1 inch long. Gil_mo ( talk) 20:05, 25 April 2014 (UTC)