| A | B |
| One indication that "something was wrong" in nature was the | disappearance of ospreys |
| Rachel Carson's book Silent Spring led to the formation of the | enviromental movement |
| People did not want to stop spraying with chemicals because these chemicals were being used to kill | insects |
| Rachel Carson's main difficulty during the time she wrote Silent Spring was that she | was suffering from a serious illness |
| The greatest importance of Silent Spring was that it | introduced the concept of ecology |
| The author defines ecology as the way | the natural world fits together |
| In 1962, when Silent Spring was published, people had to learn that | beneficial chemicals can also be harmful |
| The most outspoken opponents of the book were manufacturers of | chemicals |
| The author gives examples of irrational arguments used against Silent Spring. one of them was that | Rachel Carson thought that birds were more important than people |
| Silent Spring helped people to understand that | well-intentioned people can cause harm out of ignorance |