https://www.mnemonic-device.com/big-history/5x109-8-7-6-5-4-3-2-1-0/
Earth timescale: 5x10^9, 8, 7, 6, 5,… · mnemonic-device.com
Each number in this mnemonic means "5 × 10 to that power, in years ago," and every step is 10 times closer to today than the last.
mnemonic deviceearthtimescale
https://www.mnemonic-device.com/english-spelling/ocean/
OCEAN · mnemonic-device.com
This is a mnemonic to help you remember how to spell OCEAN. Take the first letter of each word: Only Cat's Eyes Are Narrow → O-C-E-A-N.
mnemonic deviceocean
https://www.mnemonic-device.com/biology/dead-repairman-never-fix-taps/
Dead Repairman Never Fix Taps · mnemonic-device.com
This is a memory sentence to help you remember the characteristics of dicots. "Dead" stands for Dicots itself; the rest maps one letter per trait:…
mnemonic devicedeadrepairmanneverfix