How do you tell the gender of a kitten?

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.

One student group hypothesized that the dry baker's yeast must be alive.the temperature change, odor, and bubble foation, they said, indicated whych characteristic of life

What will a hypothesis become if supported by repeated expermentation