It's when you have too much nutrients in a lake or pond mainly from runoff in big rain storms, this can cause plants to grow more than normal and kill the fish in it for lack of oxygen.
The answer is:
A. understand that managing the moon landing while the lunar module had 30 seconds left of fuel required intense concentration.
In the excerpts the narrator mentions the lunar module had 30 seconds left of fuel, so the people who were in charge of the moon landing could not make a mistake, a miscalculation or lose their extraordinary focus. For example, one of the narrators states the men "could not afford to be wrong." Otherwise, the mission could have failed.
Menelaus most strongly affects the epic plot through his compelling speech.
You can see here in the speech that 'they all held their peace,' meaning that everybody stopped fighting in order to hear what Menelaus had to say. And what he said resonated with everyone so that their fighting stopped completely - his speech made them have a change of heart and heed his advice.
This is because Jim Crow laws are the laws of racial segregation in the United states that existed from just after the Civil War up until the mid-sixties which is same as the 'To Kill a Mockingbird' by Harper Lee.
They can give great advise and that can get people to be brave.
