If we make the analogy that the mitochondrion is the power plant of a cell city, what is the chloroplast?
power plant
control center
solar panel
border between countries

(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.”)

What are the authors purposes in writing its our world too young people who are making a difference

In the sentence from barbara kingsolver’s “life without go go boots”, “writers are supposed to be eccentric,” the word eccentric is a euphemism for