i am a 9 letter word starting with e and ending with r. i contain 4 vowels and i am used when you identify something you have seen previously

(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.”)

Jane addams's memoir, twenty years at hull-house, describes her work with

Iwas conscious that a moment's mutiny had already rendered me liable to strange penalties, and, like any other rebel slave, i felt resolved, in my desperation, to go all lengths." what is meant by the term resolved as it is used in this sentence? a) determined b) questioning c) uneasy d) unsure