Answer:Rachel Carson Book's "Silent Spring" changed the way people thought and treated the Earth by showing the destructive impacts of pesticide use on animal life. Explanation: ... Silent Spring is considered the first worldwide warning against the harmful effects of pesticide use in agriculture.
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Chlorosis is the yellowing of leafs due to lack of chlorophyll. It can affect any part of the plant that would have normally have chlorophyll. Its caused by damage or compacted roots, and many other things.
I would say true. I say this because there have been times where scientists find out that there are better ways of performing experiments, or found that certain materials work better for certain tasks. (Especially true in medicinal fields!)
first, third, fourth, second
