"when" functioning as a relative pronoun in a relative clause can only take the subject of the sentence?
like in this example
Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs
here when cannot refer to mice, because it's not the subject, I heard that in a manhattan video but "that" can remove the ambiguity, why is that?
both "that" and "when" are relative pronouns and both are attached to "in mice" then why is it that "that" can refer to mice but not "when"?
like in this example
Recently documented examples of neurogenesis, the production of new brain cells, include the brain growing in mice when placed in a stimulating environment or neurons increasing in canaries that learn new songs
here when cannot refer to mice, because it's not the subject, I heard that in a manhattan video but "that" can remove the ambiguity, why is that?
both "that" and "when" are relative pronouns and both are attached to "in mice" then why is it that "that" can refer to mice but not "when"?
