Strategic bomber, submarine ICBM, ground ICBM
The question you are asking is equivalent in many ways to asking "Which number is bigger 27 or 27?" as an atomic explosive and a nuclear explosive are generally considered the same. The only difference is a bomb is typically an explosive delivered by a manned airplane whereas the explosive warhead on a missile is delivered by either a rocket or an unmanned airplane called a cruise missile. Either one could be a higher yield explosive, or as I stated in the example at the beginning of this answer both could be identical.
Without nuclear weapons, another nation with nuclear weapons could launch an attack without worry of a retaliation. There are not that many ways of diverting a long-range ballistic missile.
Sex
I don't see any reason to think nuclear energy could be used more efficiently there than elsewhere
Only in nuclear reactors and nuclear weapons.
there are many ways it might start. there could be so many different ways scenarios. the tension is grow thus making it more and more likely for it to happen.
There are many ways in which energy can be obtained, some of these sources could be: Solar Wind hydroelectric solar agricultural geothermal tidal nuclear :)
A-Bombs and nuclear power plants
through CS
The four ways to deliver an oral report are through memorization, reading directly from a script, using bullet points or note cards for guidance, and speaking impromptu based on knowledge of the topic. Each method has its own advantages and suitability depending on the context and audience.
There are many ways. Nuclear Physics, Cosmology, Physicists, Biologist, Doctors, etc. Even Paleontology could be described as a form of science!
Practice the briefing