HELP PLEASE If you answer this correctly ill answer some of your questions you have posted! (17pts)

How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )

(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.”)

Use the dictionary entry for crude to answer the question crude use context clues to choose the sentence that best uses the fourth definition of the word crude. crude ['krüd) adj from latin crudus 1. the quality of being unchanged from the original state 2. the quality of being primitive or uncultured 3. the quality of being obvious 4. the quality of being rough in execution rather than being subtle, selma was rather crude in the way she conducted herself at the meeting. elijah and his brother quickly built a crude shelter that would keep them warm and dry through the night. thelma's knowledge of art and poetry showed the rest of the diners that she was far from crude. there was oil to be found on the property, but it was crude and would need to be processed. mark this and return save and exit next submit