How does the author make connections between her many ideas on love? Does she repeat any of these ideas?

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Can anyone plz with this question i accidentally posted on physics it's 99 points plus this 5 ponts and will mark as brainliest link :

What else do you think experts can learn from studying the language of written work? what do you think is the value of studying the language of william shakespeare whose writing is over hundreds of years old?