Good evening, the whole theme of “Climate Change” in Firebringer represents Jemilla and Zazzalil’s relationship. The climate changes right after the argument and Jemilla leaves the tribe, and 8 cavewomen with sparklers can’t have had that much of an impact on the climate in that short time. The climate changes because Jemilla and Zazzalil are apart, and their relationship is now distant.
The climate change referenced in the finale (Make the Most of it) is not just interweaving the melody from the song “Climate Change”, its talking about how their relationship has become stronger and how they’re now in love, therefore the climate, representing their relationship has changed again.
Plus, the “Something’s in the air” from these lyrics completely means love, as the usage of fire hasn’t stopped or made a huge impact on the environment, as if it stopped. This is explained through Emberley and Grunt’s lyrics, that the the “thing in the air” is love.
All in all? These are two cavewomen are completely and utterly in love.