The correct answer is B) Creating mining technology. Hope this helps.
The answer should be B) protons and neutrons repel eachother. the protons and neutrons have opposite charges and repel eachother, so of course the nucleus needs to have a very strong force to hold it all together :P
The advantage to flowering plants is when it has the extra seed it can provide food for the embryo.
A = 70, B = 10, C=20, D=20, E= 30, F=50.
The cell wall controls this