Answer and Explanation:
Represent as spokespersons for the views of their group on topics and plan the regular legislative process, and design the mutual agreement arrangements regulating the period for discussion.
Scientists thought that modern man and Neanderthals were far less evolved, but in fact Neanderthals and modern man had much more in common and were more similar to what scientists originally thought.
This kind of "mistake" is normal because science is not completely correct, and everything is done through experimentation and hypotheses that lead to testing.
