Anchor: Visibility improvement would be anticipated over large areas including national parks and wilderness areas and recovery of many freshwater and coastal ecosystems would be likely.
Entailed: Improvement in visibility and aquatic ecosystems are the intended outcomes.
Contradiction: With this new plan, visibility over large areas would be reduced and some freshwater ecosystems would be irreparably harmed.
Contradiction: The people are in a dark movie theater.
Contradiction: It was even at your age.
Contradiction: Maybe it slowed the process.
Contradiction: Around 300 b.c was when native  Indians began to develop a lasting hunting and gathering culture.