Explain how innate behavior is adaptive?
Our fight or flight reaction is innate. It is caused by stress. It was evolved when we were cave-men and threats like dangerous animals were a daily occurrence.
In the modern world we have a lot more stress to deal with e.g. exams, work etc. This means that out stress reaction remains to have the same symptoms but to different things. This implies that it has developed to produce the same reaction to things that are not as much of a threat as dangerous animals.