What was one source of inspiration for Alexander Graham Bell when developing the telephone? Journalists needed a way to communicate quickly across the country. He had worked on technology assisting deaf individuals with speech. He sought to give the Union an advantage in the Civil War. There was no way to send messages long distances.

Why do you think electric energy for households is generally supplied by power plants instead of by an electric generator at home.

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.