Answer:
The author's main purpose/idea is trying to persuade you to think shorter summer breaks are better.
Explanation:
So, basically, shorter summer breaks are better.
The Odyssey, an epic, was written by Homer, a renowned Greek epic poet. The prequel to this book is The Iliad and leads off with the end of the Siege of Troy and the disappearance of Odysseus. The Odyssey is set in a time ten years since the fall of Troy in the kingdom of Ithaca, a dark time where the missing hero Odysseus is still nowhere to be seen. Told in the perspective of his beloved son, the plot outlines the search for Odysseus.
There are three main differences between nuclear and mitochondria DNA (mtDNA): 1.) mtDNA is circular, whereas nuclear DNA is linear. (Both are double stranded) 2.) mtDNA is (generally) uni-parentally inherited, in most animals (not mussels though for example), mtDNA is passed from mother to offspring. from wiki
Beam would be replaced with Streak
Hope that helped! Good luck!