>>76
The sonic hedgehog protein is the morphogen affecting the growth of the spinal cord.
>>77
Children have very little morale along with physical ability and most likely would not take part in any hostilities. The posters of /sci/ also have low morale, enough to be convinced to restrain Bill Nye for "lulz", but not enough to commit murder.
>>80
The exact processes are unknown and research is ongoing in this branch of biology called embryogenesis. As a result I cannot give you an answer or be botherred to explain to you everything that has been discoverred so far, I will however give you a minimum of an abstract explanation of the general processes involved.
After fertilization the large female egg will begin to split into smaller cells each with the new zygote DNA, becomming a blastula, a cluster of cells. The female egg cell is not symmetrical with 2 regions called the animal pole and the vegetal pole, as the egg splits the new cells migrate in relation to these poles to several areas called germ layers which will grow into the various parts of the embryo. This growth is called gastrulation. After the germ layers have developped the blastula undergoes organogenesis in which the various structures of the embryo are developped. By this time the embryo is attached to the mother by a placenta and will grow into a baby.
>>90
There is not much related to science in your question other than psychology and aesthetics. I chose the name Mr. Science arbitrarily and the decision was not affected by psychological faults, psychology however is not restricted to the observation of mental disease so we may briefly observe the mental process involved in the decision. I chose the name Mr. Science as it brings into account an element of the culture of science which suggests that I am a person with a strong interest, in science. Aesthetically I believe it is a success, however there is always the risk that some people will not like the decision. Such people may feel that my intentions were not to show that I have a strong interest in science but to claim that I am superior in some way. Claims of superiority are often seen as a declaration that others are inferior and thus a threat. If you feel strong emotions as a result of my usage of the name "Mr. Science" then you may be sufferring from psychological problems, if not then I believe that your aggressive attitude is the result of your desire to troll me which is not indicative of any problems.
>>91
There is a property of 0 which causes problems which is it's removal of information during multiplication and division. For instance...
0*1=0*2
1≠2
You cannot multiply or divide a number by 0 and retain information. The proper calculation for the multiplication can only be as follows...
0*1=0*2
0=0
Mathematicians say 0 is a real number, but it removes information like infinity so for whatever reason it is called a real number, it is "also" a theoretical number. Taking this into account all the evidence points towards n/0=infinity if n < 0 and n/0=-infinity if 0 < n. As Cybernetix pointed out particles reach speeds near the speed of light when a star with a neutron core large enough to become a black hole goes supernova. More specifically neutrons fuse creating a point in space with infinite density called a singularity. The meme of saying "OH SHI-" whenever someone divides by zero is derived from the Stephen Wright quote "Black holes are where God divided by zero." and the popular cliche in American action movies in which swearing is not allowed where a person who has spotted the precursor to an explosion shouts "OH SHI-" and the offensive word is cut off by the sound of an explosion. In the case of the meme the explosion is supposed to be the explosion generated by the formation of the black hole as the person spots someone dividing by zero thus generating the infinite figure. If computers did not have safeguards against the results of dividing by zero an effect within the computer similiar to the formation of a singularity can be seen with the computer attempting to calculate something which would require an eternity to complete which can be compared to the time dilation which is enough to prevent light escaping within the event horizon of a black hole.
>>95
Probably not.
>>97
The ingestion of feces usually induces an involuntary gag reflex. Either you eat very small quantities of your own feces, it has been alterred or you have a pschological or physical illness which impairs your gag reflex and motivates you to consume feces. If anything contradicts these hypothesis please state so.
>>100
From the equation we can see that you need twice as many moles of NaOH to react with 1 mole of N2O4.
0.00465*2 = 0.0093
We need 0.0093 moles of NaOH. There are 0.3 moles per decimetre squared in the solution...
0.3mol/dm^3 = 0.0093/X dm^3
0.0093/0.3 = X = 0.031
Which means the amount of NaOH in 0.31 dm^3 of the solution is sufficient and 0.31 dm^3 is the minimum volume of the solution required to react with 0.00465 moles of N2O4.