The following question refers to "Taste - The Final Frontier." "What input have astronauts had in the most recent experiments on space food?" is a more useful research question than "Has space food changed since the 1960s?" because
it is a broad, general question about growing food on Mars.
it will yield specific information.
it can be answered yes or no.
about future events.
A. it is a broad, general question about growing food on Mars.
There are no new answers.