It’s the same situation as if the president became ill or incapacitated in some way.
This has already happened 3 4 times; once for Reagan, twice for GW Bush, and once for Biden (see comment below). In these cases it was quite brief.
Wood Science must be a rather strange field.
1 mL of pure water weighs exactly 1 g at 20 °C and 1 atm pressure :) It’s a defined standard, useful for calibrating other things.
1 mL. Studying chemistry has made that extremely useful and now other units seem ridiculous.
If we’re talking about geology or oceanography though, cubic meters are fine.
Thanks, correction added!