Which type of relationship do humans have with bacteria:
Mutualism or parasitism? Why?

Id say a bit of both. If I had to chose it would be mutualism. In my mind there is more mutual bacteria that actually help the human body more than “parasite” bacteria. There are obviously many bad bacteria but those are outnumbered tremendously compared to safe bacteria. Trust me, one of my friends hasn’t washed his hands for 2 months. Hasn’t gotten sick yet :)

Very minute and important evidence needs to be collected in order together detail and figure out what had happened

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun