Only within the 20th Century has biological thought been focused on ecology, or the relation of the living creature to its environment. Awareness of ecological relationships is - or should be - the basis of modern conservation programs, for it… — Rachel Carson Copy Share Image
“Only within the 20th Century has biological thought been focused on ecology, or the relation of the living creature to its environment. Awareness of ecological relationships is — or should be — the basis of modern conservation programs, for it… — Rachel Carson Copy Share Image
