soap scum sticks to the side of the bathtub witch causes bathtub rings to form.
A bathtub for people or 4-legged pets . . . definitely. A bathtub for small birds . . . not definitely, but most likely.
There are naturally occurring rings, like tree rings and the rings of Saturn.
the allele causes a certain type of protein to form-apex
There is really no such thing as a "liquid" unit. The unit of measure is for the VOLUME of something. The best unit for measuring the volume of a human bathtub would be the "Litre".
Call Bob the Builder.
Dirt
Yes, it is very common for a vortex to form in a bathtub as it drains.
what causes tree rings to form each year
Meteors that strike the inner moons surface make dust particles that form into rings around Jupiter
PINK
yes
Yes.
Its rings and its ability of floating in water if there was a bathtub big enough.
Tuck it into your bathtub.
The ring around the bathtub is caused by soap scum an dirt. The ring can be washed off using bathroom cleaner.
You have to pee when you get in the bathtub because the liquid of the water gats you thinking about peeing, plus the temp. of the water causes your blatter muscles to relax.
Bubble bath residue and epithelial tissue.