One of:

• eyes to see a wider spectrum of light (infrared to gamma-ray)
• ears to increase sensitivity or reduce it close to 0 a will
• nose to smell all dangerous stuff that is odourless (carbon monoxide f.e.)
• muscles not to lose training after a few days (I am not sure that wouldn’t fuck up methabolism)
• have an organ to catch radiowaves (while being capable to switch it off)
• brown fat cells to never feel cold (with added super bonus that they also kill cancer by starving it)
• liver to remove toxins without being easily damaged

The choice is difficult :)

There is already a concept from french nobility about that… Didn’t prevent their head to roll in the end

https://en.wikipedia.org/wiki/Noblesse_oblige?wprov=sfla1

Km is 10³m cm is 10^-2m so the difference is 10⁵ i.e. 100000 (one with 5 zeroes)

Or more intuitively one centi-meter is a 1/100 of a meter and Kilo-Meter is 1000 meter therefore 100*1000 100000

It is quite intuitive, once you start using it

What’s weird is why we don’t use Megameters and megagrams (i.e. one metric ton)

Sorry, but you are wrong, battery means exactly chemical battery

Gravity electrical storage is not a battery

https://en.wikipedia.org/wiki/Electric_battery?wprov=sfla1

Yep

And the picture from 1991 is in black and white?

GTFO

Edit: seems I was wrong in my assumptions

I thought, depending on context, might mean rest in peace or rest in piss…

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Not really, the chances to find a winning ticket of a lottery walking on the street is almost comparable