Yeah, that’s why I said might, since any evidence is circumstantial and could have another explanation. I did not intend to present that as fact but merely a possibility of even more extreme environment changes than jungle to grasslands that we might have had in our ancient past.
Source on the semi-aquatic part? Looking it up only brings up the aquatic ape hypothesis which is pseudoscience.
Yeah, that’s why I said might, since any evidence is circumstantial and could have another explanation. I did not intend to present that as fact but merely a possibility of even more extreme environment changes than jungle to grasslands that we might have had in our ancient past.