The atomic bomb is made up of fissile elements like uranium that have isotopes that can be used to carry out fission nuclear chain reaction. The nuclear chain reactions can be defined as the process which releases neutrons. When the released neutrons hit the uranium-235, it splits up into two smaller atoms and more neutrons.
Big Bang, the universe is still expanding. Slowly the planets get further away from each other. It's the third planet from the sun, some believed that the earth was in the center of the universe and now we believe the sun is in the middle.Explanation:
Fueron identificados por un estudio de un grupo de investigadores en Israel y su análisis indica que el Homosapiens ya vivía fuera de África hace 185.000 años, unos 80.000 años antes de lo que se pensaba.
