Some pesticides are ________________ because they are dangerous for humans and animals.

My mom only buys _____________fruits and vegetables because she thinks they are healthier.

The ecosystem is very ________________so we should protect it.

Rachel Carson was an important and influential __________________, who wrote about the dangers of ________________.

Rachel Carson _________________ a war of words with her book about the dangers of pesticides.

Your _______________________will need to work to protect the Earth against deforestation.

Companies that made ____________ verbally attacked Carson's ideas.

The ___________ in pesticides were getting into rivers and streams.

Tiny __________animals ate the contaminated plants. When small fish ____________the animals, the DDT got into their bodies too.

Humans need to _____________ our behaviors to protect our Earth.

The chemical DDT ___________birds from reproducing because it affected the strength of their egg shells.