Pro se means they're representing themselves. Probably because of no money.
Bestaa
The linked page uses the Mifflin-St Jeor Formula which appears to have been published in 1990. As someone acquainted with eugenics but not how BMR calculations play a role, could you share some I formation on how the two are related?
The residue left over after boiling water is probably mostly calcium (if white) or iron (if orange/brown). Both are from dissolved minerals in the water source. If you need to clean anything stained by either, vinegar should dissolve the minerals with minimal effort. I'd avoid vinegar on anything stone (like countertops), as some types of stone will dissolve in the presence of acid.
Everywhere I've lived, most groceries aren't taxed, so what's showing would be the final price.
Things that might be taxed are things like pre-prepared food or soda.
I (distantly) knew someone who was cutting grass on an incline adjacent to a pond. The lawnmower flipped, and it pinned him in the pond. He drowned in a foot of water and was sober.
People misjudge things all the time. I would guess it was a combination of distraction and/or non-ideal terrain (slope, dropoff, or combination).
It's rampant click bait. I try not to reward the behavior with clicks, but sometimes I'm genuinely interested in the topic. This is not one of those times.
Those are manta rays.