Title: Insect.
Question: To what measurement, in cm, did the wingspans of giant dragonfly-like forms reach?

Title: Federal Bureau of Investigation.
Question: When did the FBI increase it's counter-terrorism role?

Title: Separation of church and state in the United States.
Question: What was Tucker concerned the establishment clause could preempt?

Title: Chihuahua (state).
Question:
What type of life varies greatly with the elevation in the mountains?