Understanding Cause and Effect in Yellowstone

What is a key indicator of a cause and effect text structure?

• Chronology

• Comparison

• Keywords like 'because' and 'as a result'

• Dialogue

What was the primary goal of creating Yellowstone National Park?

• To establish a new city

• To create a hunting ground

• To preserve natural landscapes and wildlife

• To build a tourist attraction

What happened to the elk population after the wolves were hunted to extinction?

• It decreased

• It disappeared

• It remained stable

• It increased significantly

Which species was directly affected by the overgrazing of vegetation by elk?

• Rabbits

• Lions

• Beavers

• Wolves

What is a trophic cascade?

• A type of waterfall

• A geological formation

• A chain reaction in an ecosystem

• A method of hunting

What year did the reintroduction of wolves to Yellowstone begin?

• 1975

• 1985

• 1995

• 2005

What was a major challenge in the wolf reintroduction program?

• Too many wolves

• Insufficient funding and willpower

• Opposition from other countries

• Lack of public interest

How did the presence of wolves change the behavior of elk?

• Elk became more aggressive

• Elk migrated out of the park

• Elk avoided certain areas

• Elk increased in number

What was the effect of the growing trees on bird species?

• Birds' population decreased

• Birds left the park

• Birds had fewer nesting sites

• Birds found more nesting opportunities

What is the main takeaway regarding the role of wolves in Yellowstone?

• Wolves only affect the elk population

• Wolves are unnecessary for the ecosystem

• Wolves are harmful to other species

• Wolves are crucial for maintaining ecological balance