Thus wrote Charles Darwin on the twenty-second and twenty-fourth of October 1873.[1] At first reading this passage appears rather incongruous, but actually it reflects the true nature of the resurgence of evolution in the Nineteenth Century: but to see this, it behooves us to look back further in history; back to the root of evolution as an idea ...
May 9, 2014. Exothermic reactions are spontaneous because the product created by an exothermic reaction is the most stable product. Exothermic reactions release heat or energy. The more energy something has, the more unstable it will be. Therefore kinetics determines that the most stable product will dominate and as a result exothermic reactions are spontaneous to produce a stable product.
Something spontaneous happens when you're least expecting it. Spontaneous things are natural or instinctive, and they happen without warning. If you plan to go to a movie and then you go, that's not a spontaneous thing. Ditching the movie at the last minute to go to the park? That's spontaneous. Spontaneous things happen all of a sudden, on the spur of the moment, without being planned. Spontaneous can also refer to things that happen without outside influence. Your parents will be happy if you do your chores spontaneously instead of waiting till they nag you.