1. Pronouns used in scientific writing:
* "It" and "its" are commonly used for non-human subjects or when the gender of the subject is unknown or irrelevant.
* "They" and "them" are increasingly used in scientific writing as a gender-neutral singular pronoun, particularly for subjects like a person whose gender identity is unknown or non-binary.
2. Pronouns used in scientific studies:
* "He" and "she" are used in studies involving human participants when their gender is known and relevant to the research question.
* "They" and "them" might be used in studies where gender is not relevant to the study or when the participants' gender identities are not disclosed.
3. Misunderstanding of "science" and "pronouns":
It's also possible that "science pronouns" is a misunderstanding or a term used in a specific context that's not widely known.
To clarify what you're looking for, could you provide more context or details about where you encountered this term?