Answer:
For each of us, as for the robin in Michigan or the salmon in the Miramichi, this is a problem of ecology,
of interrelationships, of interdependence. We poison the caddis flies in the stream and the salmon runs
dwindle and die. We spray our elms and the following springs are silent of robin song, not because we
sprayed the robins directly but because the poison traveled, step by step, through the now familiar
elm leaf-earthworm-robin cycle. These are matters of record, observable, part of the visible world around us."
Rachel Carson. Silent Spring, 1962
29. Why would Carson say what she does in the excerpt above?
The growth of higher education throughout the country
The increase in government regulation of natural resources like mining techniques
