Explain why scientists are working hard to develop more renewable sources of energy. in 4th grade sintoin

What is the main idea of this paragraph? asap

What is the main difference between hearing and listening? a) hearing is easy; listening is hard. b) hearing involves the outer ear; listening involves the inner ear. c) hearing is the physical activity; listening involves processing the information. d) none of the above

Based on what you have read, write two or three sentences explaining what the point of view in the memoir allows readers to learn about helen keller.