I just took a look at my activity monitor (to see if I could optimize my RAM), and saw at the bottom of the memory section a huge amount of root tasks simply titled 'cron' (screenshot below).
They don't seem to use that much of memory, but I was wondering what they are used for, and why their are so many (around 60% of all my tasks in memory).
I run macOs Catalina 10.15.3 on a MacBook Pro 16 from 2019.