1: How does carson classify modern insecticides? what are the differences between the two largest groups? 2: What is potentiation and how does it

1: How does carson classify modern insecticides? what are the differences between the two largest groups?2: What is potentiation and how does it pose a threat to living organisms?3: why does carson compare the proliferation of sythetic chemicals pesticides to a "smooth super highway on which we progress with great speed?" 4: describe some specific examples of "biological control: methods that have been attempted5: why does carson use biologiest carl p swanson's metaphor of science as a river to explain the science of biological control in america?6: what responsibility does carson believe scientists have to the public?