I can only answer this for the biology question: The "answer" was a spam answer which was deleted on Dec 15, 2022, the question was deleted as "RemoveAbandonedQuestions" by the system on June 3, 2023.
It makes a difference if an answer is deleted with the question (question is deleted, answer as well) or if the answer is independently deleted from the question. In the first case, users should be able to see the answers, in the second only users with at least 10k reputation. I think this thread here on Meta explains this further.
Does this answer your question?