For each of us, as for the robin in Michigan or for the salmon in Miramichi,This is a problem of ecology, enter relationships, or of interdependence. We poison them caddis flies in the stream and the salmon runs dwindled and die… We spray our Elms and the following springs are silent a robin song, not because we sprayed the birds directly but because the poison traveled, step-by-step, through them now familiar Elmleaf earthworm Robin cycle. There are matters of record, observable, part of the visible world around us.
Rachel Carson, silent spring, 1962.
which of the following developments contributed most directly to the conditions described in the excerpt?
A. The erosion of soil on the great plains
B. The growth of higher education
C. The growth of suburban housing and previously under developed land
which of the following was a result of Carson’s argument in the excerpt above?
A. An increase in the number of farmers in the United States
B. The rise of a counterculture movement among young Americans
C. The passage of new laws to reduce pollution and protect the environment