The purpose of Rachel Carson's, Silent Spring, was to document the environmental effects caused by the usage of pesticides. Carson claims that humans risk having been subjected from birth to death to toxic chemicals. She explains that water sources are intertwined lines of earth transportation, contributing to chemical pollutants. That such water channels, including earth's rivers, can still be used as nutrient and mineral transport roads, but is polluted by heavy chemical insecticides and pesticide extinction. They are found in all our foodstuffs and also in "the child's skin".
The purpose of Rachel Carson's, Silent Spring, was to document the environmental effects caused by the usage of pesticides. The audience would most likely be students who require the knowledge in the topic of environmental science. The tone is informative. The theme can be seen as the harsh affects that humans can have on the world. The rhetorical devices are logos and ethos to pull the audience in.