the only dog-friendly trail in yosemite
the only country to feature the bible on its national flag
the only country in the world named after a woman
the only continent in the world that has no volcanoes?
the only completely reliable method for preventing backflow?

What is the only even prime number?

The only even prime number is 2. It is the smallest prime number and the only even number that is prime. Every other even number can be divided by 2 and therefore cannot be a prime number. 2 is a unique prime number as it is also the only prime number that is an even number. It is a foundational number in mathematics and plays important roles in number theory and cryptography. Prime numbers are of special interest to mathematicians as they cannot be generated by multiplying two other whole numbers.

the only evolutionary mechanism that consistently leads to adaptive evolution?
the only food item thrasher's in ocean city
the only force that acts on a falling body when it is in free fall?
the only force that can act on an object in free fall?
the only force that can act on an object in free fall? gravity friction air resistance speed
the only fruit that does not have seeds
the only g-rated movie to win the academy award for best picture
the only jewelry allowed when preparing food
the only jewelry that may be worn on the hands or arms while handling food?
the only jointless bone in your body
the only letter not appearing on the periodic table
the only letter not on the periodic table
the only letter that does not appear in any of the names of the american states
the only mammal that cannot jump
the only mammal that can t jump