Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Ultrasound, a diagnostic technology, uses high-frequency vibrations transmitted into any tissue in contact with the transducer.

Output: What diagnostic technology uses high-frequency vibrations transmitted into any tissue in contact with the transducer?


Input: Consider Input: Most ferns produce the same type of spores and are therefore called homosporous.

Output: Most ferns produce the same type of spores and are therefore called what?


Input: Consider Input: At the earth’s surface, the air pressure exerted on you is a result of the weight of air above you.


Output: At the earth’s surface, the air pressure exerted on you is a result of the weight of what above you?